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Finding the Fourth Proportional to 260,871.12, 391,293.18 and 73,883.16

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Solution

The fourth proportional to 260,871.12, 391,293.18 and 73,883.16 is: 110,820.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,871.12 : 391,293.18 = 73,883.16 : x
  2. Step 2: Convert to fraction form
    260,871.12/391,293.18 = 73,883.16/x
  3. Step 3: Cross multiply
    260,871.12x = 391,293.18 × 73,883.16
  4. Step 4: Simplify right side
    260,871.12x = 28,909,976,624.85
  5. Step 5: Solve for x
    x = 28,909,976,624.85/260,871.12
  6. Step 6: Final answer
    x = 110,820.92

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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.