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Finding the Fourth Proportional to 63,714.78, 87,931.35 and 35,427.42

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Solution

The fourth proportional to 63,714.78, 87,931.35 and 35,427.42 is: 48,892.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,714.78 : 87,931.35 = 35,427.42 : x
  2. Step 2: Convert to fraction form
    63,714.78/87,931.35 = 35,427.42/x
  3. Step 3: Cross multiply
    63,714.78x = 87,931.35 × 35,427.42
  4. Step 4: Simplify right side
    63,714.78x = 3,115,180,867.62
  5. Step 5: Solve for x
    x = 3,115,180,867.62/63,714.78
  6. Step 6: Final answer
    x = 48,892.59

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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.