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Finding the Fourth Proportional to 199,778, 275,576.88 and 124,350.80

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Solution

The fourth proportional to 199,778, 275,576.88 and 124,350.80 is: 171,531.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,778 : 275,576.88 = 124,350.80 : x
  2. Step 2: Convert to fraction form
    199,778/275,576.88 = 124,350.80/x
  3. Step 3: Cross multiply
    199,778x = 275,576.88 × 124,350.80
  4. Step 4: Simplify right side
    199,778x = 34,268,205,489.50
  5. Step 5: Solve for x
    x = 34,268,205,489.50/199,778
  6. Step 6: Final answer
    x = 171,531.43

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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.