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Finding the Fourth Proportional to 129,651.66, 194,584.41 and 100,248.66

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Solution

The fourth proportional to 129,651.66, 194,584.41 and 100,248.66 is: 150,455.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,651.66 : 194,584.41 = 100,248.66 : x
  2. Step 2: Convert to fraction form
    129,651.66/194,584.41 = 100,248.66/x
  3. Step 3: Cross multiply
    129,651.66x = 194,584.41 × 100,248.66
  4. Step 4: Simplify right side
    129,651.66x = 19,506,826,359.39
  5. Step 5: Solve for x
    x = 19,506,826,359.39/129,651.66
  6. Step 6: Final answer
    x = 150,455.66

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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.