Home / 28,323,261,685.52-39,085,076,461.32-15,635,724,921.68

Finding the Fourth Proportional to 28,323,261,685.52, 39,085,076,461.32 and 15,635,724,921.68

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Solution

The fourth proportional to 28,323,261,685.52, 39,085,076,461.32 and 15,635,724,921.68 is: 21,576,734,730.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,323,261,685.52 : 39,085,076,461.32 = 15,635,724,921.68 : x
  2. Step 2: Convert to fraction form
    28,323,261,685.52/39,085,076,461.32 = 15,635,724,921.68/x
  3. Step 3: Cross multiply
    28,323,261,685.52x = 39,085,076,461.32 × 15,635,724,921.68
  4. Step 4: Simplify right side
    28,323,261,685.52x = 611,123,504,092,029,517,824
  5. Step 5: Solve for x
    x = 611,123,504,092,029,517,824/28,323,261,685.52
  6. Step 6: Final answer
    x = 21,576,734,730.54

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Double scale
Find fourth proportional to 28,323,261,686.52, 39,085,076,462.70 and 15,635,724,922.68
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.