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Finding the Fourth Proportional to 200,672.40, 300,901.68 and 67,508.40

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Solution

The fourth proportional to 200,672.40, 300,901.68 and 67,508.40 is: 101,226.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,672.40 : 300,901.68 = 67,508.40 : x
  2. Step 2: Convert to fraction form
    200,672.40/300,901.68 = 67,508.40/x
  3. Step 3: Cross multiply
    200,672.40x = 300,901.68 × 67,508.40
  4. Step 4: Simplify right side
    200,672.40x = 20,313,390,974.11
  5. Step 5: Solve for x
    x = 20,313,390,974.11/200,672.40
  6. Step 6: Final answer
    x = 101,226.63

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1.5x scale

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.