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Finding the Fourth Proportional to 621,789.62, 932,684.42 and 172,510.56

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Solution

The fourth proportional to 621,789.62, 932,684.42 and 172,510.56 is: 258,765.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,789.62 : 932,684.42 = 172,510.56 : x
  2. Step 2: Convert to fraction form
    621,789.62/932,684.42 = 172,510.56/x
  3. Step 3: Cross multiply
    621,789.62x = 932,684.42 × 172,510.56
  4. Step 4: Simplify right side
    621,789.62x = 160,897,912,028.75
  5. Step 5: Solve for x
    x = 160,897,912,028.75/621,789.62
  6. Step 6: Final answer
    x = 258,765.84

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Half scale
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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.