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Finding the Fourth Proportional to 91,265.83, 136,565.70 and 53,843.83

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Solution

The fourth proportional to 91,265.83, 136,565.70 and 53,843.83 is: 80,569.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,265.83 : 136,565.70 = 53,843.83 : x
  2. Step 2: Convert to fraction form
    91,265.83/136,565.70 = 53,843.83/x
  3. Step 3: Cross multiply
    91,265.83x = 136,565.70 × 53,843.83
  4. Step 4: Simplify right side
    91,265.83x = 7,353,219,791.30
  5. Step 5: Solve for x
    x = 7,353,219,791.30/91,265.83
  6. Step 6: Final answer
    x = 80,569.26

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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.