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Finding the Fourth Proportional to 57,712.80, 86,569.20 and 24,421.80

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Solution

The fourth proportional to 57,712.80, 86,569.20 and 24,421.80 is: 36,632.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,712.80 : 86,569.20 = 24,421.80 : x
  2. Step 2: Convert to fraction form
    57,712.80/86,569.20 = 24,421.80/x
  3. Step 3: Cross multiply
    57,712.80x = 86,569.20 × 24,421.80
  4. Step 4: Simplify right side
    57,712.80x = 2,114,175,688.56
  5. Step 5: Solve for x
    x = 2,114,175,688.56/57,712.80
  6. Step 6: Final answer
    x = 36,632.70

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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.