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Finding the Fourth Proportional to 862,753.78, 1,294,134 and 263,712.61

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Solution

The fourth proportional to 862,753.78, 1,294,134 and 263,712.61 is: 395,569.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    862,753.78 : 1,294,134 = 263,712.61 : x
  2. Step 2: Convert to fraction form
    862,753.78/1,294,134 = 263,712.61/x
  3. Step 3: Cross multiply
    862,753.78x = 1,294,134 × 263,712.61
  4. Step 4: Simplify right side
    862,753.78x = 341,279,454,829.74
  5. Step 5: Solve for x
    x = 341,279,454,829.74/862,753.78
  6. Step 6: Final answer
    x = 395,569.93

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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.