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Finding the Fourth Proportional to 71,907.28, 107,909.54 and 25,160.56

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Solution

The fourth proportional to 71,907.28, 107,909.54 and 25,160.56 is: 37,757.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,907.28 : 107,909.54 = 25,160.56 : x
  2. Step 2: Convert to fraction form
    71,907.28/107,909.54 = 25,160.56/x
  3. Step 3: Cross multiply
    71,907.28x = 107,909.54 × 25,160.56
  4. Step 4: Simplify right side
    71,907.28x = 2,715,064,455.74
  5. Step 5: Solve for x
    x = 2,715,064,455.74/71,907.28
  6. Step 6: Final answer
    x = 37,757.85

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1.5x scale

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.