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Finding the Fourth Proportional to 200,545.54, 300,820.74 and 67,425.28

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Solution

The fourth proportional to 200,545.54, 300,820.74 and 67,425.28 is: 101,138.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,545.54 : 300,820.74 = 67,425.28 : x
  2. Step 2: Convert to fraction form
    200,545.54/300,820.74 = 67,425.28/x
  3. Step 3: Cross multiply
    200,545.54x = 300,820.74 × 67,425.28
  4. Step 4: Simplify right side
    200,545.54x = 20,282,922,624.31
  5. Step 5: Solve for x
    x = 20,282,922,624.31/200,545.54
  6. Step 6: Final answer
    x = 101,138.74

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.