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Finding the Fourth Proportional to 124,611.96, 171,961.20 and 114,580.92

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Solution

The fourth proportional to 124,611.96, 171,961.20 and 114,580.92 is: 158,118.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,611.96 : 171,961.20 = 114,580.92 : x
  2. Step 2: Convert to fraction form
    124,611.96/171,961.20 = 114,580.92/x
  3. Step 3: Cross multiply
    124,611.96x = 171,961.20 × 114,580.92
  4. Step 4: Simplify right side
    124,611.96x = 19,703,472,500.30
  5. Step 5: Solve for x
    x = 19,703,472,500.30/124,611.96
  6. Step 6: Final answer
    x = 158,118.63

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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.