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Finding the Fourth Proportional to 10,361.70, 15,549.12 and 5,434.92

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Solution

The fourth proportional to 10,361.70, 15,549.12 and 5,434.92 is: 8,155.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,361.70 : 15,549.12 = 5,434.92 : x
  2. Step 2: Convert to fraction form
    10,361.70/15,549.12 = 5,434.92/x
  3. Step 3: Cross multiply
    10,361.70x = 15,549.12 × 5,434.92
  4. Step 4: Simplify right side
    10,361.70x = 84,508,223.27
  5. Step 5: Solve for x
    x = 84,508,223.27/10,361.70
  6. Step 6: Final answer
    x = 8,155.83

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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.