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Finding the Fourth Proportional to 125,639.55, 173,380.64 and 69,049.71

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Solution

The fourth proportional to 125,639.55, 173,380.64 and 69,049.71 is: 95,287.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,639.55 : 173,380.64 = 69,049.71 : x
  2. Step 2: Convert to fraction form
    125,639.55/173,380.64 = 69,049.71/x
  3. Step 3: Cross multiply
    125,639.55x = 173,380.64 × 69,049.71
  4. Step 4: Simplify right side
    125,639.55x = 11,971,882,566.37
  5. Step 5: Solve for x
    x = 11,971,882,566.37/125,639.55
  6. Step 6: Final answer
    x = 95,287.53

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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.