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Finding the Fourth Proportional to 123,202.65, 170,019.62 and 69,487.55

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Solution

The fourth proportional to 123,202.65, 170,019.62 and 69,487.55 is: 95,892.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,202.65 : 170,019.62 = 69,487.55 : x
  2. Step 2: Convert to fraction form
    123,202.65/170,019.62 = 69,487.55/x
  3. Step 3: Cross multiply
    123,202.65x = 170,019.62 × 69,487.55
  4. Step 4: Simplify right side
    123,202.65x = 11,814,245,648.20
  5. Step 5: Solve for x
    x = 11,814,245,648.20/123,202.65
  6. Step 6: Final answer
    x = 95,892.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.