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Finding the Fourth Proportional to 62,788.88, 86,648.40 and 34,108.40

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Solution

The fourth proportional to 62,788.88, 86,648.40 and 34,108.40 is: 47,069.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,788.88 : 86,648.40 = 34,108.40 : x
  2. Step 2: Convert to fraction form
    62,788.88/86,648.40 = 34,108.40/x
  3. Step 3: Cross multiply
    62,788.88x = 86,648.40 × 34,108.40
  4. Step 4: Simplify right side
    62,788.88x = 2,955,438,286.56
  5. Step 5: Solve for x
    x = 2,955,438,286.56/62,788.88
  6. Step 6: Final answer
    x = 47,069.45

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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.