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Finding the Fourth Proportional to 125,803.76, 173,609.18 and 69,213.92

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Solution

The fourth proportional to 125,803.76, 173,609.18 and 69,213.92 is: 95,515.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,803.76 : 173,609.18 = 69,213.92 : x
  2. Step 2: Convert to fraction form
    125,803.76/173,609.18 = 69,213.92/x
  3. Step 3: Cross multiply
    125,803.76x = 173,609.18 × 69,213.92
  4. Step 4: Simplify right side
    125,803.76x = 12,016,171,895.79
  5. Step 5: Solve for x
    x = 12,016,171,895.79/125,803.76
  6. Step 6: Final answer
    x = 95,515.20

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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.