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Finding the Fourth Proportional to 125,487.94, 173,173.64 and 68,902.96

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Solution

The fourth proportional to 125,487.94, 173,173.64 and 68,902.96 is: 95,086.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,487.94 : 173,173.64 = 68,902.96 : x
  2. Step 2: Convert to fraction form
    125,487.94/173,173.64 = 68,902.96/x
  3. Step 3: Cross multiply
    125,487.94x = 173,173.64 × 68,902.96
  4. Step 4: Simplify right side
    125,487.94x = 11,932,176,389.97
  5. Step 5: Solve for x
    x = 11,932,176,389.97/125,487.94
  6. Step 6: Final answer
    x = 95,086.24

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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.