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Finding the Fourth Proportional to 59,588.80, 89,356.80 and 20,135.20

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Solution

The fourth proportional to 59,588.80, 89,356.80 and 20,135.20 is: 30,193.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,588.80 : 89,356.80 = 20,135.20 : x
  2. Step 2: Convert to fraction form
    59,588.80/89,356.80 = 20,135.20/x
  3. Step 3: Cross multiply
    59,588.80x = 89,356.80 × 20,135.20
  4. Step 4: Simplify right side
    59,588.80x = 1,799,217,039.36
  5. Step 5: Solve for x
    x = 1,799,217,039.36/59,588.80
  6. Step 6: Final answer
    x = 30,193.88

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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.