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Finding the Fourth Proportional to 508,743.70, 763,115.55 and 243,023.20

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Solution

The fourth proportional to 508,743.70, 763,115.55 and 243,023.20 is: 364,534.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,743.70 : 763,115.55 = 243,023.20 : x
  2. Step 2: Convert to fraction form
    508,743.70/763,115.55 = 243,023.20/x
  3. Step 3: Cross multiply
    508,743.70x = 763,115.55 × 243,023.20
  4. Step 4: Simplify right side
    508,743.70x = 185,454,782,930.76
  5. Step 5: Solve for x
    x = 185,454,782,930.76/508,743.70
  6. Step 6: Final answer
    x = 364,534.80

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Similar ratio
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1.5x scale

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.