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Finding the Fourth Proportional to 95,391.84, 131,678 and 71,587.56

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Solution

The fourth proportional to 95,391.84, 131,678 and 71,587.56 is: 98,818.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    95,391.84 : 131,678 = 71,587.56 : x
  2. Step 2: Convert to fraction form
    95,391.84/131,678 = 71,587.56/x
  3. Step 3: Cross multiply
    95,391.84x = 131,678 × 71,587.56
  4. Step 4: Simplify right side
    95,391.84x = 9,426,506,725.68
  5. Step 5: Solve for x
    x = 9,426,506,725.68/95,391.84
  6. Step 6: Final answer
    x = 98,818.80

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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.