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Finding the Fourth Proportional to 122,908.59, 169,626.56 and 75,193.65

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Solution

The fourth proportional to 122,908.59, 169,626.56 and 75,193.65 is: 103,775.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,908.59 : 169,626.56 = 75,193.65 : x
  2. Step 2: Convert to fraction form
    122,908.59/169,626.56 = 75,193.65/x
  3. Step 3: Cross multiply
    122,908.59x = 169,626.56 × 75,193.65
  4. Step 4: Simplify right side
    122,908.59x = 12,754,839,807.38
  5. Step 5: Solve for x
    x = 12,754,839,807.38/122,908.59
  6. Step 6: Final answer
    x = 103,775.01

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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.