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Finding the Fourth Proportional to 75,515.72, 104,251.76 and 47,230.52

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Solution

The fourth proportional to 75,515.72, 104,251.76 and 47,230.52 is: 65,203.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,515.72 : 104,251.76 = 47,230.52 : x
  2. Step 2: Convert to fraction form
    75,515.72/104,251.76 = 47,230.52/x
  3. Step 3: Cross multiply
    75,515.72x = 104,251.76 × 47,230.52
  4. Step 4: Simplify right side
    75,515.72x = 4,923,864,835.72
  5. Step 5: Solve for x
    x = 4,923,864,835.72/75,515.72
  6. Step 6: Final answer
    x = 65,203.18

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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.