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Finding the Fourth Proportional to 1,711.46, 2,361.78 and 965.48

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Solution

The fourth proportional to 1,711.46, 2,361.78 and 965.48 is: 1,332.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,711.46 : 2,361.78 = 965.48 : x
  2. Step 2: Convert to fraction form
    1,711.46/2,361.78 = 965.48/x
  3. Step 3: Cross multiply
    1,711.46x = 2,361.78 × 965.48
  4. Step 4: Simplify right side
    1,711.46x = 2,280,251.35
  5. Step 5: Solve for x
    x = 2,280,251.35/1,711.46
  6. Step 6: Final answer
    x = 1,332.34

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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.