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Finding the Fourth Proportional to 61,522.60, 84,718.02 and 57,057.10

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Solution

The fourth proportional to 61,522.60, 84,718.02 and 57,057.10 is: 78,568.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,522.60 : 84,718.02 = 57,057.10 : x
  2. Step 2: Convert to fraction form
    61,522.60/84,718.02 = 57,057.10/x
  3. Step 3: Cross multiply
    61,522.60x = 84,718.02 × 57,057.10
  4. Step 4: Simplify right side
    61,522.60x = 4,833,764,538.94
  5. Step 5: Solve for x
    x = 4,833,764,538.94/61,522.60
  6. Step 6: Final answer
    x = 78,568.92

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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.