Home / 85,555,303,251.20-128,332,954,876.80-81,927,899,561.60

Finding the Fourth Proportional to 85,555,303,251.20, 128,332,954,876.80 and 81,927,899,561.60

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Solution

The fourth proportional to 85,555,303,251.20, 128,332,954,876.80 and 81,927,899,561.60 is: 122,891,849,342.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,555,303,251.20 : 128,332,954,876.80 = 81,927,899,561.60 : x
  2. Step 2: Convert to fraction form
    85,555,303,251.20/128,332,954,876.80 = 81,927,899,561.60/x
  3. Step 3: Cross multiply
    85,555,303,251.20x = 128,332,954,876.80 × 81,927,899,561.60
  4. Step 4: Simplify right side
    85,555,303,251.20x = 10,514,049,437,589,816,999,936
  5. Step 5: Solve for x
    x = 10,514,049,437,589,816,999,936/85,555,303,251.20
  6. Step 6: Final answer
    x = 122,891,849,342.40

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.