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Finding the Fourth Proportional to 75,404.70, 113,103.45 and 25,479.90

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Solution

The fourth proportional to 75,404.70, 113,103.45 and 25,479.90 is: 38,218.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,404.70 : 113,103.45 = 25,479.90 : x
  2. Step 2: Convert to fraction form
    75,404.70/113,103.45 = 25,479.90/x
  3. Step 3: Cross multiply
    75,404.70x = 113,103.45 × 25,479.90
  4. Step 4: Simplify right side
    75,404.70x = 2,881,864,595.66
  5. Step 5: Solve for x
    x = 2,881,864,595.66/75,404.70
  6. Step 6: Final answer
    x = 38,218.63

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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.