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Finding the Fourth Proportional to 159,381.48, 239,016.44 and 47,031.88

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Solution

The fourth proportional to 159,381.48, 239,016.44 and 47,031.88 is: 70,531.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,381.48 : 239,016.44 = 47,031.88 : x
  2. Step 2: Convert to fraction form
    159,381.48/239,016.44 = 47,031.88/x
  3. Step 3: Cross multiply
    159,381.48x = 239,016.44 × 47,031.88
  4. Step 4: Simplify right side
    159,381.48x = 11,241,392,524.11
  5. Step 5: Solve for x
    x = 11,241,392,524.11/159,381.48
  6. Step 6: Final answer
    x = 70,531.36

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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.