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Finding the Fourth Proportional to 61,679.21, 85,118.88 and 37,819.04

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Solution

The fourth proportional to 61,679.21, 85,118.88 and 37,819.04 is: 52,191.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,679.21 : 85,118.88 = 37,819.04 : x
  2. Step 2: Convert to fraction form
    61,679.21/85,118.88 = 37,819.04/x
  3. Step 3: Cross multiply
    61,679.21x = 85,118.88 × 37,819.04
  4. Step 4: Simplify right side
    61,679.21x = 3,219,114,327.48
  5. Step 5: Solve for x
    x = 3,219,114,327.48/61,679.21
  6. Step 6: Final answer
    x = 52,191.24

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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.