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Finding the Fourth Proportional to 62,390.57, 86,074.57 and 38,475.73

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Solution

The fourth proportional to 62,390.57, 86,074.57 and 38,475.73 is: 53,081.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,390.57 : 86,074.57 = 38,475.73 : x
  2. Step 2: Convert to fraction form
    62,390.57/86,074.57 = 38,475.73/x
  3. Step 3: Cross multiply
    62,390.57x = 86,074.57 × 38,475.73
  4. Step 4: Simplify right side
    62,390.57x = 3,311,781,915.19
  5. Step 5: Solve for x
    x = 3,311,781,915.19/62,390.57
  6. Step 6: Final answer
    x = 53,081.45

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1.5x scale

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.