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Finding the Fourth Proportional to 7,363.40, 10,161.40 and 4,006.20

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Solution

The fourth proportional to 7,363.40, 10,161.40 and 4,006.20 is: 5,528.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,363.40 : 10,161.40 = 4,006.20 : x
  2. Step 2: Convert to fraction form
    7,363.40/10,161.40 = 4,006.20/x
  3. Step 3: Cross multiply
    7,363.40x = 10,161.40 × 4,006.20
  4. Step 4: Simplify right side
    7,363.40x = 40,708,600.68
  5. Step 5: Solve for x
    x = 40,708,600.68/7,363.40
  6. Step 6: Final answer
    x = 5,528.51

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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.