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Finding the Fourth Proportional to 45,708.89, 68,531.13 and 17,605.40

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Solution

The fourth proportional to 45,708.89, 68,531.13 and 17,605.40 is: 26,395.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,708.89 : 68,531.13 = 17,605.40 : x
  2. Step 2: Convert to fraction form
    45,708.89/68,531.13 = 17,605.40/x
  3. Step 3: Cross multiply
    45,708.89x = 68,531.13 × 17,605.40
  4. Step 4: Simplify right side
    45,708.89x = 1,206,517,613.45
  5. Step 5: Solve for x
    x = 1,206,517,613.45/45,708.89
  6. Step 6: Final answer
    x = 26,395.69

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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.