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Finding the Fourth Proportional to 62,257.50, 85,915.35 and 39,901.50

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Solution

The fourth proportional to 62,257.50, 85,915.35 and 39,901.50 is: 55,064.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,257.50 : 85,915.35 = 39,901.50 : x
  2. Step 2: Convert to fraction form
    62,257.50/85,915.35 = 39,901.50/x
  3. Step 3: Cross multiply
    62,257.50x = 85,915.35 × 39,901.50
  4. Step 4: Simplify right side
    62,257.50x = 3,428,151,338.03
  5. Step 5: Solve for x
    x = 3,428,151,338.03/62,257.50
  6. Step 6: Final answer
    x = 55,064.07

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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.