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Finding the Fourth Proportional to 40,531.80, 60,724.80 and 34,699.80

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Solution

The fourth proportional to 40,531.80, 60,724.80 and 34,699.80 is: 51,987.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,531.80 : 60,724.80 = 34,699.80 : x
  2. Step 2: Convert to fraction form
    40,531.80/60,724.80 = 34,699.80/x
  3. Step 3: Cross multiply
    40,531.80x = 60,724.80 × 34,699.80
  4. Step 4: Simplify right side
    40,531.80x = 2,107,138,415.04
  5. Step 5: Solve for x
    x = 2,107,138,415.04/40,531.80
  6. Step 6: Final answer
    x = 51,987.29

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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.