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Finding the Fourth Proportional to 95,160, 131,320.80 and 55,416

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Solution

The fourth proportional to 95,160, 131,320.80 and 55,416 is: 76,474.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    95,160 : 131,320.80 = 55,416 : x
  2. Step 2: Convert to fraction form
    95,160/131,320.80 = 55,416/x
  3. Step 3: Cross multiply
    95,160x = 131,320.80 × 55,416
  4. Step 4: Simplify right side
    95,160x = 7,277,273,452.80
  5. Step 5: Solve for x
    x = 7,277,273,452.80/95,160
  6. Step 6: Final answer
    x = 76,474.08

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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.