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Finding the Fourth Proportional to 99,351.66, 137,103.39 and 54,639.66

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Solution

The fourth proportional to 99,351.66, 137,103.39 and 54,639.66 is: 75,401.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,351.66 : 137,103.39 = 54,639.66 : x
  2. Step 2: Convert to fraction form
    99,351.66/137,103.39 = 54,639.66/x
  3. Step 3: Cross multiply
    99,351.66x = 137,103.39 × 54,639.66
  4. Step 4: Simplify right side
    99,351.66x = 7,491,282,614.45
  5. Step 5: Solve for x
    x = 7,491,282,614.45/99,351.66
  6. Step 6: Final answer
    x = 75,401.69

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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.