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Finding the Fourth Proportional to 92,308.88, 138,752.34 and 60,920.65

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Solution

The fourth proportional to 92,308.88, 138,752.34 and 60,920.65 is: 91,571.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,308.88 : 138,752.34 = 60,920.65 : x
  2. Step 2: Convert to fraction form
    92,308.88/138,752.34 = 60,920.65/x
  3. Step 3: Cross multiply
    92,308.88x = 138,752.34 × 60,920.65
  4. Step 4: Simplify right side
    92,308.88x = 8,452,882,048.06
  5. Step 5: Solve for x
    x = 8,452,882,048.06/92,308.88
  6. Step 6: Final answer
    x = 91,571.71

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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.