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Finding the Fourth Proportional to 72,582.97, 108,772.35 and 57,725.95

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Solution

The fourth proportional to 72,582.97, 108,772.35 and 57,725.95 is: 86,507.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,582.97 : 108,772.35 = 57,725.95 : x
  2. Step 2: Convert to fraction form
    72,582.97/108,772.35 = 57,725.95/x
  3. Step 3: Cross multiply
    72,582.97x = 108,772.35 × 57,725.95
  4. Step 4: Simplify right side
    72,582.97x = 6,278,987,237.48
  5. Step 5: Solve for x
    x = 6,278,987,237.48/72,582.97
  6. Step 6: Final answer
    x = 86,507.72

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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.