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Finding the Fourth Proportional to 92,593.62, 138,941.91 and 45,209.30

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Solution

The fourth proportional to 92,593.62, 138,941.91 and 45,209.30 is: 67,839.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,593.62 : 138,941.91 = 45,209.30 : x
  2. Step 2: Convert to fraction form
    92,593.62/138,941.91 = 45,209.30/x
  3. Step 3: Cross multiply
    92,593.62x = 138,941.91 × 45,209.30
  4. Step 4: Simplify right side
    92,593.62x = 6,281,465,797.05
  5. Step 5: Solve for x
    x = 6,281,465,797.05/92,593.62
  6. Step 6: Final answer
    x = 67,839.08

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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.