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Finding the Fourth Proportional to 96,390.66, 133,019.07 and 53,949.18

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Solution

The fourth proportional to 96,390.66, 133,019.07 and 53,949.18 is: 74,449.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,390.66 : 133,019.07 = 53,949.18 : x
  2. Step 2: Convert to fraction form
    96,390.66/133,019.07 = 53,949.18/x
  3. Step 3: Cross multiply
    96,390.66x = 133,019.07 × 53,949.18
  4. Step 4: Simplify right side
    96,390.66x = 7,176,269,750.86
  5. Step 5: Solve for x
    x = 7,176,269,750.86/96,390.66
  6. Step 6: Final answer
    x = 74,449.85

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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.