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Finding the Fourth Proportional to 83,609.63, 125,503.11 and 74,054.52

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Solution

The fourth proportional to 83,609.63, 125,503.11 and 74,054.52 is: 111,160.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,609.63 : 125,503.11 = 74,054.52 : x
  2. Step 2: Convert to fraction form
    83,609.63/125,503.11 = 74,054.52/x
  3. Step 3: Cross multiply
    83,609.63x = 125,503.11 × 74,054.52
  4. Step 4: Simplify right side
    83,609.63x = 9,294,072,569.56
  5. Step 5: Solve for x
    x = 9,294,072,569.56/83,609.63
  6. Step 6: Final answer
    x = 111,160.32

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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.