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Finding the Fourth Proportional to 96,391.16, 133,019.78 and 53,949.69

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Solution

The fourth proportional to 96,391.16, 133,019.78 and 53,949.69 is: 74,450.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,391.16 : 133,019.78 = 53,949.69 : x
  2. Step 2: Convert to fraction form
    96,391.16/133,019.78 = 53,949.69/x
  3. Step 3: Cross multiply
    96,391.16x = 133,019.78 × 53,949.69
  4. Step 4: Simplify right side
    96,391.16x = 7,176,375,894.87
  5. Step 5: Solve for x
    x = 7,176,375,894.87/96,391.16
  6. Step 6: Final answer
    x = 74,450.56

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1.5x scale

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.