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Finding the Fourth Proportional to 173,886.60, 260,842.05 and 68,691.90

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Solution

The fourth proportional to 173,886.60, 260,842.05 and 68,691.90 is: 103,042.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,886.60 : 260,842.05 = 68,691.90 : x
  2. Step 2: Convert to fraction form
    173,886.60/260,842.05 = 68,691.90/x
  3. Step 3: Cross multiply
    173,886.60x = 260,842.05 × 68,691.90
  4. Step 4: Simplify right side
    173,886.60x = 17,917,736,014.40
  5. Step 5: Solve for x
    x = 17,917,736,014.40/173,886.60
  6. Step 6: Final answer
    x = 103,042.65

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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.