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Finding the Fourth Proportional to 67,881.80, 101,877.84 and 28,466.60

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Solution

The fourth proportional to 67,881.80, 101,877.84 and 28,466.60 is: 42,723.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,881.80 : 101,877.84 = 28,466.60 : x
  2. Step 2: Convert to fraction form
    67,881.80/101,877.84 = 28,466.60/x
  3. Step 3: Cross multiply
    67,881.80x = 101,877.84 × 28,466.60
  4. Step 4: Simplify right side
    67,881.80x = 2,900,115,720.14
  5. Step 5: Solve for x
    x = 2,900,115,720.14/67,881.80
  6. Step 6: Final answer
    x = 42,723.02

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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.