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Finding the Fourth Proportional to 129,040.65, 193,472.55 and 65,738.25

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Solution

The fourth proportional to 129,040.65, 193,472.55 and 65,738.25 is: 98,562.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,040.65 : 193,472.55 = 65,738.25 : x
  2. Step 2: Convert to fraction form
    129,040.65/193,472.55 = 65,738.25/x
  3. Step 3: Cross multiply
    129,040.65x = 193,472.55 × 65,738.25
  4. Step 4: Simplify right side
    129,040.65x = 12,718,546,860.04
  5. Step 5: Solve for x
    x = 12,718,546,860.04/129,040.65
  6. Step 6: Final answer
    x = 98,562.33

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1.5x scale

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.