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Finding the Fourth Proportional to 129,077.80, 193,527.90 and 65,775.40

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Solution

The fourth proportional to 129,077.80, 193,527.90 and 65,775.40 is: 98,617.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,077.80 : 193,527.90 = 65,775.40 : x
  2. Step 2: Convert to fraction form
    129,077.80/193,527.90 = 65,775.40/x
  3. Step 3: Cross multiply
    129,077.80x = 193,527.90 × 65,775.40
  4. Step 4: Simplify right side
    129,077.80x = 12,729,375,033.66
  5. Step 5: Solve for x
    x = 12,729,375,033.66/129,077.80
  6. Step 6: Final answer
    x = 98,617.85

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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.