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Finding the Fourth Proportional to 173,722.90, 260,730.15 and 85,052.20

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Solution

The fourth proportional to 173,722.90, 260,730.15 and 85,052.20 is: 127,649.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,722.90 : 260,730.15 = 85,052.20 : x
  2. Step 2: Convert to fraction form
    173,722.90/260,730.15 = 85,052.20/x
  3. Step 3: Cross multiply
    173,722.90x = 260,730.15 × 85,052.20
  4. Step 4: Simplify right side
    173,722.90x = 22,175,672,863.83
  5. Step 5: Solve for x
    x = 22,175,672,863.83/173,722.90
  6. Step 6: Final answer
    x = 127,649.68

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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.