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Finding the Fourth Proportional to 63,658.32, 87,922.29 and 42,400.68

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Solution

The fourth proportional to 63,658.32, 87,922.29 and 42,400.68 is: 58,562.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,658.32 : 87,922.29 = 42,400.68 : x
  2. Step 2: Convert to fraction form
    63,658.32/87,922.29 = 42,400.68/x
  3. Step 3: Cross multiply
    63,658.32x = 87,922.29 × 42,400.68
  4. Step 4: Simplify right side
    63,658.32x = 3,727,964,883.16
  5. Step 5: Solve for x
    x = 3,727,964,883.16/63,658.32
  6. Step 6: Final answer
    x = 58,562.10

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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.