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Finding the Fourth Proportional to 125,030.59, 172,531.28 and 74,034.17

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Solution

The fourth proportional to 125,030.59, 172,531.28 and 74,034.17 is: 102,160.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,030.59 : 172,531.28 = 74,034.17 : x
  2. Step 2: Convert to fraction form
    125,030.59/172,531.28 = 74,034.17/x
  3. Step 3: Cross multiply
    125,030.59x = 172,531.28 × 74,034.17
  4. Step 4: Simplify right side
    125,030.59x = 12,773,210,083.26
  5. Step 5: Solve for x
    x = 12,773,210,083.26/125,030.59
  6. Step 6: Final answer
    x = 102,160.68

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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.