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Finding the Fourth Proportional to 67,165.48, 100,748.22 and 27,679.20

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Solution

The fourth proportional to 67,165.48, 100,748.22 and 27,679.20 is: 41,518.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,165.48 : 100,748.22 = 27,679.20 : x
  2. Step 2: Convert to fraction form
    67,165.48/100,748.22 = 27,679.20/x
  3. Step 3: Cross multiply
    67,165.48x = 100,748.22 × 27,679.20
  4. Step 4: Simplify right side
    67,165.48x = 2,788,630,131.02
  5. Step 5: Solve for x
    x = 2,788,630,131.02/67,165.48
  6. Step 6: Final answer
    x = 41,518.80

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1.5x scale

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.