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Finding the Fourth Proportional to 1,383,516, 1,909,281.24 and 779,904

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Solution

The fourth proportional to 1,383,516, 1,909,281.24 and 779,904 is: 1,076,283.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,383,516 : 1,909,281.24 = 779,904 : x
  2. Step 2: Convert to fraction form
    1,383,516/1,909,281.24 = 779,904/x
  3. Step 3: Cross multiply
    1,383,516x = 1,909,281.24 × 779,904
  4. Step 4: Simplify right side
    1,383,516x = 1,489,056,076,200.96
  5. Step 5: Solve for x
    x = 1,489,056,076,200.96/1,383,516
  6. Step 6: Final answer
    x = 1,076,283.96

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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.