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Finding the Fourth Proportional to 1,133.92, 1,706.86 and 966.88

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Solution

The fourth proportional to 1,133.92, 1,706.86 and 966.88 is: 1,455.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,133.92 : 1,706.86 = 966.88 : x
  2. Step 2: Convert to fraction form
    1,133.92/1,706.86 = 966.88/x
  3. Step 3: Cross multiply
    1,133.92x = 1,706.86 × 966.88
  4. Step 4: Simplify right side
    1,133.92x = 1,650,328.80
  5. Step 5: Solve for x
    x = 1,650,328.80/1,133.92
  6. Step 6: Final answer
    x = 1,455.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.