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Finding the Fourth Proportional to 92,673.20, 138,926.57 and 45,261.47

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Solution

The fourth proportional to 92,673.20, 138,926.57 and 45,261.47 is: 67,851.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,673.20 : 138,926.57 = 45,261.47 : x
  2. Step 2: Convert to fraction form
    92,673.20/138,926.57 = 45,261.47/x
  3. Step 3: Cross multiply
    92,673.20x = 138,926.57 × 45,261.47
  4. Step 4: Simplify right side
    92,673.20x = 6,288,019,859.32
  5. Step 5: Solve for x
    x = 6,288,019,859.32/92,673.20
  6. Step 6: Final answer
    x = 67,851.55

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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.