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Finding the Fourth Proportional to 70,972.52, 106,529.85 and 51,005.48

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Solution

The fourth proportional to 70,972.52, 106,529.85 and 51,005.48 is: 76,559.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,972.52 : 106,529.85 = 51,005.48 : x
  2. Step 2: Convert to fraction form
    70,972.52/106,529.85 = 51,005.48/x
  3. Step 3: Cross multiply
    70,972.52x = 106,529.85 × 51,005.48
  4. Step 4: Simplify right side
    70,972.52x = 5,433,605,600.93
  5. Step 5: Solve for x
    x = 5,433,605,600.93/70,972.52
  6. Step 6: Final answer
    x = 76,559.29

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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.