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Finding the Fourth Proportional to 125,989.67, 173,865.75 and 69,401.06

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Solution

The fourth proportional to 125,989.67, 173,865.75 and 69,401.06 is: 95,773.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,989.67 : 173,865.75 = 69,401.06 : x
  2. Step 2: Convert to fraction form
    125,989.67/173,865.75 = 69,401.06/x
  3. Step 3: Cross multiply
    125,989.67x = 173,865.75 × 69,401.06
  4. Step 4: Simplify right side
    125,989.67x = 12,066,467,347.70
  5. Step 5: Solve for x
    x = 12,066,467,347.70/125,989.67
  6. Step 6: Final answer
    x = 95,773.47

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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.