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Finding the Fourth Proportional to 515,373.12, 773,132.58 and 199,861.92

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Solution

The fourth proportional to 515,373.12, 773,132.58 and 199,861.92 is: 299,821.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,373.12 : 773,132.58 = 199,861.92 : x
  2. Step 2: Convert to fraction form
    515,373.12/773,132.58 = 199,861.92/x
  3. Step 3: Cross multiply
    515,373.12x = 773,132.58 × 199,861.92
  4. Step 4: Simplify right side
    515,373.12x = 154,519,761,853.35
  5. Step 5: Solve for x
    x = 154,519,761,853.35/515,373.12
  6. Step 6: Final answer
    x = 299,821.15

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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.