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Finding the Fourth Proportional to 129,806.80, 194,633.40 and 67,598.80

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Solution

The fourth proportional to 129,806.80, 194,633.40 and 67,598.80 is: 101,358.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,806.80 : 194,633.40 = 67,598.80 : x
  2. Step 2: Convert to fraction form
    129,806.80/194,633.40 = 67,598.80/x
  3. Step 3: Cross multiply
    129,806.80x = 194,633.40 × 67,598.80
  4. Step 4: Simplify right side
    129,806.80x = 13,156,984,279.92
  5. Step 5: Solve for x
    x = 13,156,984,279.92/129,806.80
  6. Step 6: Final answer
    x = 101,358.21

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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.