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Finding the Fourth Proportional to 125,876.45, 173,709.41 and 69,287.83

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Solution

The fourth proportional to 125,876.45, 173,709.41 and 69,287.83 is: 95,617.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,876.45 : 173,709.41 = 69,287.83 : x
  2. Step 2: Convert to fraction form
    125,876.45/173,709.41 = 69,287.83/x
  3. Step 3: Cross multiply
    125,876.45x = 173,709.41 × 69,287.83
  4. Step 4: Simplify right side
    125,876.45x = 12,035,947,808.43
  5. Step 5: Solve for x
    x = 12,035,947,808.43/125,876.45
  6. Step 6: Final answer
    x = 95,617.15

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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.