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Finding the Fourth Proportional to 39,658.56, 59,424.72 and 20,937.92

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Solution

The fourth proportional to 39,658.56, 59,424.72 and 20,937.92 is: 31,373.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,658.56 : 59,424.72 = 20,937.92 : x
  2. Step 2: Convert to fraction form
    39,658.56/59,424.72 = 20,937.92/x
  3. Step 3: Cross multiply
    39,658.56x = 59,424.72 × 20,937.92
  4. Step 4: Simplify right side
    39,658.56x = 1,244,230,033.38
  5. Step 5: Solve for x
    x = 1,244,230,033.38/39,658.56
  6. Step 6: Final answer
    x = 31,373.56

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1.5x scale

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.