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Finding the Fourth Proportional to 60,691,812.80, 91,037,719.20 and 60,691,812.80

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Solution

The fourth proportional to 60,691,812.80, 91,037,719.20 and 60,691,812.80 is: 91,037,719.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,691,812.80 : 91,037,719.20 = 60,691,812.80 : x
  2. Step 2: Convert to fraction form
    60,691,812.80/91,037,719.20 = 60,691,812.80/x
  3. Step 3: Cross multiply
    60,691,812.80x = 91,037,719.20 × 60,691,812.80
  4. Step 4: Simplify right side
    60,691,812.80x = 5,525,244,211,425,366
  5. Step 5: Solve for x
    x = 5,525,244,211,425,366/60,691,812.80
  6. Step 6: Final answer
    x = 91,037,719.20

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Double scale
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Similar ratio
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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.