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Finding the Fourth Proportional to 88,049.88, 121,508.43 and 47,763.66

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Solution

The fourth proportional to 88,049.88, 121,508.43 and 47,763.66 is: 65,913.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,049.88 : 121,508.43 = 47,763.66 : x
  2. Step 2: Convert to fraction form
    88,049.88/121,508.43 = 47,763.66/x
  3. Step 3: Cross multiply
    88,049.88x = 121,508.43 × 47,763.66
  4. Step 4: Simplify right side
    88,049.88x = 5,803,687,337.65
  5. Step 5: Solve for x
    x = 5,803,687,337.65/88,049.88
  6. Step 6: Final answer
    x = 65,913.63

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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.