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Finding the Fourth Proportional to 73,811.52, 110,717.28 and 18,407.52

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Solution

The fourth proportional to 73,811.52, 110,717.28 and 18,407.52 is: 27,611.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,811.52 : 110,717.28 = 18,407.52 : x
  2. Step 2: Convert to fraction form
    73,811.52/110,717.28 = 18,407.52/x
  3. Step 3: Cross multiply
    73,811.52x = 110,717.28 × 18,407.52
  4. Step 4: Simplify right side
    73,811.52x = 2,038,030,545.95
  5. Step 5: Solve for x
    x = 2,038,030,545.95/73,811.52
  6. Step 6: Final answer
    x = 27,611.28

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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.