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Finding the Fourth Proportional to 66,988.97, 92,425.84 and 43,129.46

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Solution

The fourth proportional to 66,988.97, 92,425.84 and 43,129.46 is: 59,506.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,988.97 : 92,425.84 = 43,129.46 : x
  2. Step 2: Convert to fraction form
    66,988.97/92,425.84 = 43,129.46/x
  3. Step 3: Cross multiply
    66,988.97x = 92,425.84 × 43,129.46
  4. Step 4: Simplify right side
    66,988.97x = 3,986,275,999.29
  5. Step 5: Solve for x
    x = 3,986,275,999.29/66,988.97
  6. Step 6: Final answer
    x = 59,506.45

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.