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Finding the Fourth Proportional to 83,274.80, 124,547.70 and 74,453.90

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Solution

The fourth proportional to 83,274.80, 124,547.70 and 74,453.90 is: 111,354.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,274.80 : 124,547.70 = 74,453.90 : x
  2. Step 2: Convert to fraction form
    83,274.80/124,547.70 = 74,453.90/x
  3. Step 3: Cross multiply
    83,274.80x = 124,547.70 × 74,453.90
  4. Step 4: Simplify right side
    83,274.80x = 9,273,062,001.03
  5. Step 5: Solve for x
    x = 9,273,062,001.03/83,274.80
  6. Step 6: Final answer
    x = 111,354.96

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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.