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Finding the Fourth Proportional to 68,865.98, 95,031.06 and 38,648.48

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Solution

The fourth proportional to 68,865.98, 95,031.06 and 38,648.48 is: 53,332.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,865.98 : 95,031.06 = 38,648.48 : x
  2. Step 2: Convert to fraction form
    68,865.98/95,031.06 = 38,648.48/x
  3. Step 3: Cross multiply
    68,865.98x = 95,031.06 × 38,648.48
  4. Step 4: Simplify right side
    68,865.98x = 3,672,806,021.79
  5. Step 5: Solve for x
    x = 3,672,806,021.79/68,865.98
  6. Step 6: Final answer
    x = 53,332.66

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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.