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Finding the Fourth Proportional to 67,693.16, 101,539.90 and 18,445.16

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Solution

The fourth proportional to 67,693.16, 101,539.90 and 18,445.16 is: 27,667.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,693.16 : 101,539.90 = 18,445.16 : x
  2. Step 2: Convert to fraction form
    67,693.16/101,539.90 = 18,445.16/x
  3. Step 3: Cross multiply
    67,693.16x = 101,539.90 × 18,445.16
  4. Step 4: Simplify right side
    67,693.16x = 1,872,919,701.88
  5. Step 5: Solve for x
    x = 1,872,919,701.88/67,693.16
  6. Step 6: Final answer
    x = 27,667.78

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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.