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Finding the Fourth Proportional to 568,490.20, 852,669.15 and 147,798.88

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Solution

The fourth proportional to 568,490.20, 852,669.15 and 147,798.88 is: 221,681.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    568,490.20 : 852,669.15 = 147,798.88 : x
  2. Step 2: Convert to fraction form
    568,490.20/852,669.15 = 147,798.88/x
  3. Step 3: Cross multiply
    568,490.20x = 852,669.15 × 147,798.88
  4. Step 4: Simplify right side
    568,490.20x = 126,023,545,380.55
  5. Step 5: Solve for x
    x = 126,023,545,380.55/568,490.20
  6. Step 6: Final answer
    x = 221,681.12

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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.