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Finding the Fourth Proportional to 83,265.40, 124,898.10 and 74,517.40

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Solution

The fourth proportional to 83,265.40, 124,898.10 and 74,517.40 is: 111,776.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,265.40 : 124,898.10 = 74,517.40 : x
  2. Step 2: Convert to fraction form
    83,265.40/124,898.10 = 74,517.40/x
  3. Step 3: Cross multiply
    83,265.40x = 124,898.10 × 74,517.40
  4. Step 4: Simplify right side
    83,265.40x = 9,307,081,676.94
  5. Step 5: Solve for x
    x = 9,307,081,676.94/83,265.40
  6. Step 6: Final answer
    x = 111,776.10

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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.