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Finding the Fourth Proportional to 85,788.49, 118,392.47 and 49,476.42

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Solution

The fourth proportional to 85,788.49, 118,392.47 and 49,476.42 is: 68,279.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,788.49 : 118,392.47 = 49,476.42 : x
  2. Step 2: Convert to fraction form
    85,788.49/118,392.47 = 49,476.42/x
  3. Step 3: Cross multiply
    85,788.49x = 118,392.47 × 49,476.42
  4. Step 4: Simplify right side
    85,788.49x = 5,857,635,570.56
  5. Step 5: Solve for x
    x = 5,857,635,570.56/85,788.49
  6. Step 6: Final answer
    x = 68,279.97

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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.