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Finding the Fourth Proportional to 71,867.62, 107,852.51 and 25,120.90

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Solution

The fourth proportional to 71,867.62, 107,852.51 and 25,120.90 is: 37,699.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,867.62 : 107,852.51 = 25,120.90 : x
  2. Step 2: Convert to fraction form
    71,867.62/107,852.51 = 25,120.90/x
  3. Step 3: Cross multiply
    71,867.62x = 107,852.51 × 25,120.90
  4. Step 4: Simplify right side
    71,867.62x = 2,709,352,118.46
  5. Step 5: Solve for x
    x = 2,709,352,118.46/71,867.62
  6. Step 6: Final answer
    x = 37,699.20

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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.