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Finding the Fourth Proportional to 72,711.93, 109,001.85 and 25,953.87

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Solution

The fourth proportional to 72,711.93, 109,001.85 and 25,953.87 is: 38,907.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,711.93 : 109,001.85 = 25,953.87 : x
  2. Step 2: Convert to fraction form
    72,711.93/109,001.85 = 25,953.87/x
  3. Step 3: Cross multiply
    72,711.93x = 109,001.85 × 25,953.87
  4. Step 4: Simplify right side
    72,711.93x = 2,829,019,844.66
  5. Step 5: Solve for x
    x = 2,829,019,844.66/72,711.93
  6. Step 6: Final answer
    x = 38,907.23

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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.