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Finding the Fourth Proportional to 125,611.80, 173,342.32 and 69,021.96

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Solution

The fourth proportional to 125,611.80, 173,342.32 and 69,021.96 is: 95,249.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,611.80 : 173,342.32 = 69,021.96 : x
  2. Step 2: Convert to fraction form
    125,611.80/173,342.32 = 69,021.96/x
  3. Step 3: Cross multiply
    125,611.80x = 173,342.32 × 69,021.96
  4. Step 4: Simplify right side
    125,611.80x = 11,964,426,504.79
  5. Step 5: Solve for x
    x = 11,964,426,504.79/125,611.80
  6. Step 6: Final answer
    x = 95,249.22

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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.