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Finding the Fourth Proportional to 69,686.20, 104,375.70 and 60,470.20

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Solution

The fourth proportional to 69,686.20, 104,375.70 and 60,470.20 is: 90,572.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,686.20 : 104,375.70 = 60,470.20 : x
  2. Step 2: Convert to fraction form
    69,686.20/104,375.70 = 60,470.20/x
  3. Step 3: Cross multiply
    69,686.20x = 104,375.70 × 60,470.20
  4. Step 4: Simplify right side
    69,686.20x = 6,311,619,454.14
  5. Step 5: Solve for x
    x = 6,311,619,454.14/69,686.20
  6. Step 6: Final answer
    x = 90,572.01

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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.