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Finding the Fourth Proportional to 68,717.80, 103,106.04 and 29,293.48

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Solution

The fourth proportional to 68,717.80, 103,106.04 and 29,293.48 is: 43,952.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,717.80 : 103,106.04 = 29,293.48 : x
  2. Step 2: Convert to fraction form
    68,717.80/103,106.04 = 29,293.48/x
  3. Step 3: Cross multiply
    68,717.80x = 103,106.04 × 29,293.48
  4. Step 4: Simplify right side
    68,717.80x = 3,020,334,720.62
  5. Step 5: Solve for x
    x = 3,020,334,720.62/68,717.80
  6. Step 6: Final answer
    x = 43,952.73

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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.