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Finding the Fourth Proportional to 67,304, 92,793.26 and 55,159.78

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Solution

The fourth proportional to 67,304, 92,793.26 and 55,159.78 is: 76,049.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,304 : 92,793.26 = 55,159.78 : x
  2. Step 2: Convert to fraction form
    67,304/92,793.26 = 55,159.78/x
  3. Step 3: Cross multiply
    67,304x = 92,793.26 × 55,159.78
  4. Step 4: Simplify right side
    67,304x = 5,118,455,807.08
  5. Step 5: Solve for x
    x = 5,118,455,807.08/67,304
  6. Step 6: Final answer
    x = 76,049.80

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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.