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Finding the Fourth Proportional to 59,886.20, 89,902.20 and 30,288.80

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Solution

The fourth proportional to 59,886.20, 89,902.20 and 30,288.80 is: 45,470.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,886.20 : 89,902.20 = 30,288.80 : x
  2. Step 2: Convert to fraction form
    59,886.20/89,902.20 = 30,288.80/x
  3. Step 3: Cross multiply
    59,886.20x = 89,902.20 × 30,288.80
  4. Step 4: Simplify right side
    59,886.20x = 2,723,029,755.36
  5. Step 5: Solve for x
    x = 2,723,029,755.36/59,886.20
  6. Step 6: Final answer
    x = 45,470.07

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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.