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Finding the Fourth Proportional to 516,369.73, 774,555.20 and 161,385.61

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Solution

The fourth proportional to 516,369.73, 774,555.20 and 161,385.61 is: 242,078.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,369.73 : 774,555.20 = 161,385.61 : x
  2. Step 2: Convert to fraction form
    516,369.73/774,555.20 = 161,385.61/x
  3. Step 3: Cross multiply
    516,369.73x = 774,555.20 × 161,385.61
  4. Step 4: Simplify right side
    516,369.73x = 125,002,063,430.67
  5. Step 5: Solve for x
    x = 125,002,063,430.67/516,369.73
  6. Step 6: Final answer
    x = 242,078.60

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Double scale
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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.