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Finding the Fourth Proportional to 107,672.62, 161,515.41 and 45,347.98

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Solution

The fourth proportional to 107,672.62, 161,515.41 and 45,347.98 is: 68,024.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,672.62 : 161,515.41 = 45,347.98 : x
  2. Step 2: Convert to fraction form
    107,672.62/161,515.41 = 45,347.98/x
  3. Step 3: Cross multiply
    107,672.62x = 161,515.41 × 45,347.98
  4. Step 4: Simplify right side
    107,672.62x = 7,324,397,582.37
  5. Step 5: Solve for x
    x = 7,324,397,582.37/107,672.62
  6. Step 6: Final answer
    x = 68,024.70

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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.