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Finding the Fourth Proportional to 71,319.96, 106,981.16 and 26,967.60

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Solution

The fourth proportional to 71,319.96, 106,981.16 and 26,967.60 is: 40,451.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,319.96 : 106,981.16 = 26,967.60 : x
  2. Step 2: Convert to fraction form
    71,319.96/106,981.16 = 26,967.60/x
  3. Step 3: Cross multiply
    71,319.96x = 106,981.16 × 26,967.60
  4. Step 4: Simplify right side
    71,319.96x = 2,885,024,995.58
  5. Step 5: Solve for x
    x = 2,885,024,995.58/71,319.96
  6. Step 6: Final answer
    x = 40,451.86

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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.