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Finding the Fourth Proportional to 125,706.40, 173,474.80 and 69,121.44

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Solution

The fourth proportional to 125,706.40, 173,474.80 and 69,121.44 is: 95,387.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,706.40 : 173,474.80 = 69,121.44 : x
  2. Step 2: Convert to fraction form
    125,706.40/173,474.80 = 69,121.44/x
  3. Step 3: Cross multiply
    125,706.40x = 173,474.80 × 69,121.44
  4. Step 4: Simplify right side
    125,706.40x = 11,990,827,979.71
  5. Step 5: Solve for x
    x = 11,990,827,979.71/125,706.40
  6. Step 6: Final answer
    x = 95,387.57

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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.