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Finding the Fourth Proportional to 527,435.97, 791,143.01 and 128,078.83

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Solution

The fourth proportional to 527,435.97, 791,143.01 and 128,078.83 is: 192,115.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,435.97 : 791,143.01 = 128,078.83 : x
  2. Step 2: Convert to fraction form
    527,435.97/791,143.01 = 128,078.83/x
  3. Step 3: Cross multiply
    527,435.97x = 791,143.01 × 128,078.83
  4. Step 4: Simplify right side
    527,435.97x = 101,328,671,650.91
  5. Step 5: Solve for x
    x = 101,328,671,650.91/527,435.97
  6. Step 6: Final answer
    x = 192,115.59

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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.