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Finding the Fourth Proportional to 356,864.80, 534,937.20 and 132,080.80

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Solution

The fourth proportional to 356,864.80, 534,937.20 and 132,080.80 is: 197,987.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,864.80 : 534,937.20 = 132,080.80 : x
  2. Step 2: Convert to fraction form
    356,864.80/534,937.20 = 132,080.80/x
  3. Step 3: Cross multiply
    356,864.80x = 534,937.20 × 132,080.80
  4. Step 4: Simplify right side
    356,864.80x = 70,654,933,325.76
  5. Step 5: Solve for x
    x = 70,654,933,325.76/356,864.80
  6. Step 6: Final answer
    x = 197,987.96

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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.