Home / 89,688,795.90-134,533,193.85-81,752,610.30

Finding the Fourth Proportional to 89,688,795.90, 134,533,193.85 and 81,752,610.30

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Solution

The fourth proportional to 89,688,795.90, 134,533,193.85 and 81,752,610.30 is: 122,628,915.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,688,795.90 : 134,533,193.85 = 81,752,610.30 : x
  2. Step 2: Convert to fraction form
    89,688,795.90/134,533,193.85 = 81,752,610.30/x
  3. Step 3: Cross multiply
    89,688,795.90x = 134,533,193.85 × 81,752,610.30
  4. Step 4: Simplify right side
    89,688,795.90x = 10,998,439,769,233,406
  5. Step 5: Solve for x
    x = 10,998,439,769,233,406/89,688,795.90
  6. Step 6: Final answer
    x = 122,628,915.45

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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.