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Finding the Fourth Proportional to 73,860.10, 110,660.55 and 60,640.90

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Solution

The fourth proportional to 73,860.10, 110,660.55 and 60,640.90 is: 90,854.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,860.10 : 110,660.55 = 60,640.90 : x
  2. Step 2: Convert to fraction form
    73,860.10/110,660.55 = 60,640.90/x
  3. Step 3: Cross multiply
    73,860.10x = 110,660.55 × 60,640.90
  4. Step 4: Simplify right side
    73,860.10x = 6,710,555,346.50
  5. Step 5: Solve for x
    x = 6,710,555,346.50/73,860.10
  6. Step 6: Final answer
    x = 90,854.95

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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.