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Finding the Fourth Proportional to 124,611.64, 186,726.03 and 84,578.56

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Solution

The fourth proportional to 124,611.64, 186,726.03 and 84,578.56 is: 126,737.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,611.64 : 186,726.03 = 84,578.56 : x
  2. Step 2: Convert to fraction form
    124,611.64/186,726.03 = 84,578.56/x
  3. Step 3: Cross multiply
    124,611.64x = 186,726.03 × 84,578.56
  4. Step 4: Simplify right side
    124,611.64x = 15,793,018,731.92
  5. Step 5: Solve for x
    x = 15,793,018,731.92/124,611.64
  6. Step 6: Final answer
    x = 126,737.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.