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Finding the Fourth Proportional to 150,516, 225,789.12 and 39,708

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Solution

The fourth proportional to 150,516, 225,789.12 and 39,708 is: 59,565.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,516 : 225,789.12 = 39,708 : x
  2. Step 2: Convert to fraction form
    150,516/225,789.12 = 39,708/x
  3. Step 3: Cross multiply
    150,516x = 225,789.12 × 39,708
  4. Step 4: Simplify right side
    150,516x = 8,965,634,376.96
  5. Step 5: Solve for x
    x = 8,965,634,376.96/150,516
  6. Step 6: Final answer
    x = 59,565.99

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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.