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Finding the Fourth Proportional to 107,031.20, 160,498.20 and 40,449.20

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Solution

The fourth proportional to 107,031.20, 160,498.20 and 40,449.20 is: 60,655.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,031.20 : 160,498.20 = 40,449.20 : x
  2. Step 2: Convert to fraction form
    107,031.20/160,498.20 = 40,449.20/x
  3. Step 3: Cross multiply
    107,031.20x = 160,498.20 × 40,449.20
  4. Step 4: Simplify right side
    107,031.20x = 6,492,023,791.44
  5. Step 5: Solve for x
    x = 6,492,023,791.44/107,031.20
  6. Step 6: Final answer
    x = 60,655.43

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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.