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Finding the Fourth Proportional to 59,720.72, 89,591.96 and 20,275.76

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Solution

The fourth proportional to 59,720.72, 89,591.96 and 20,275.76 is: 30,417.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,720.72 : 89,591.96 = 20,275.76 : x
  2. Step 2: Convert to fraction form
    59,720.72/89,591.96 = 20,275.76/x
  3. Step 3: Cross multiply
    59,720.72x = 89,591.96 × 20,275.76
  4. Step 4: Simplify right side
    59,720.72x = 1,816,545,078.89
  5. Step 5: Solve for x
    x = 1,816,545,078.89/59,720.72
  6. Step 6: Final answer
    x = 30,417.33

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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.