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Finding the Fourth Proportional to 83,010.20, 123,867.86 and 74,064.04

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Solution

The fourth proportional to 83,010.20, 123,867.86 and 74,064.04 is: 110,518.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,010.20 : 123,867.86 = 74,064.04 : x
  2. Step 2: Convert to fraction form
    83,010.20/123,867.86 = 74,064.04/x
  3. Step 3: Cross multiply
    83,010.20x = 123,867.86 × 74,064.04
  4. Step 4: Simplify right side
    83,010.20x = 9,174,154,137.75
  5. Step 5: Solve for x
    x = 9,174,154,137.75/83,010.20
  6. Step 6: Final answer
    x = 110,518.40

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.