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Finding the Fourth Proportional to 125,628.50, 173,367.42 and 69,040.28

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Solution

The fourth proportional to 125,628.50, 173,367.42 and 69,040.28 is: 95,275.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,628.50 : 173,367.42 = 69,040.28 : x
  2. Step 2: Convert to fraction form
    125,628.50/173,367.42 = 69,040.28/x
  3. Step 3: Cross multiply
    125,628.50x = 173,367.42 × 69,040.28
  4. Step 4: Simplify right side
    125,628.50x = 11,969,335,219.68
  5. Step 5: Solve for x
    x = 11,969,335,219.68/125,628.50
  6. Step 6: Final answer
    x = 95,275.64

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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.