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Finding the Fourth Proportional to 621,799.74, 932,392.89 and 261,904.86

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Solution

The fourth proportional to 621,799.74, 932,392.89 and 261,904.86 is: 392,728.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,799.74 : 932,392.89 = 261,904.86 : x
  2. Step 2: Convert to fraction form
    621,799.74/932,392.89 = 261,904.86/x
  3. Step 3: Cross multiply
    621,799.74x = 932,392.89 × 261,904.86
  4. Step 4: Simplify right side
    621,799.74x = 244,198,229,320.45
  5. Step 5: Solve for x
    x = 244,198,229,320.45/621,799.74
  6. Step 6: Final answer
    x = 392,728.10

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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.