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Finding the Fourth Proportional to 67,204.64, 92,542.21 and 65,712.88

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Solution

The fourth proportional to 67,204.64, 92,542.21 and 65,712.88 is: 90,488.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,204.64 : 92,542.21 = 65,712.88 : x
  2. Step 2: Convert to fraction form
    67,204.64/92,542.21 = 65,712.88/x
  3. Step 3: Cross multiply
    67,204.64x = 92,542.21 × 65,712.88
  4. Step 4: Simplify right side
    67,204.64x = 6,081,214,941.15
  5. Step 5: Solve for x
    x = 6,081,214,941.15/67,204.64
  6. Step 6: Final answer
    x = 90,488.02

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.