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Finding the Fourth Proportional to 70,648.92, 105,988.97 and 23,278.61

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Solution

The fourth proportional to 70,648.92, 105,988.97 and 23,278.61 is: 34,923.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,648.92 : 105,988.97 = 23,278.61 : x
  2. Step 2: Convert to fraction form
    70,648.92/105,988.97 = 23,278.61/x
  3. Step 3: Cross multiply
    70,648.92x = 105,988.97 × 23,278.61
  4. Step 4: Simplify right side
    70,648.92x = 2,467,275,896.93
  5. Step 5: Solve for x
    x = 2,467,275,896.93/70,648.92
  6. Step 6: Final answer
    x = 34,923.05

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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.