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Finding the Fourth Proportional to 59,807.20, 89,905.20 and 42,397.60

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Solution

The fourth proportional to 59,807.20, 89,905.20 and 42,397.60 is: 63,734.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,807.20 : 89,905.20 = 42,397.60 : x
  2. Step 2: Convert to fraction form
    59,807.20/89,905.20 = 42,397.60/x
  3. Step 3: Cross multiply
    59,807.20x = 89,905.20 × 42,397.60
  4. Step 4: Simplify right side
    59,807.20x = 3,811,764,707.52
  5. Step 5: Solve for x
    x = 3,811,764,707.52/59,807.20
  6. Step 6: Final answer
    x = 63,734.21

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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.