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Finding the Fourth Proportional to 2,706.56, 4,058.20 and 974.80

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Solution

The fourth proportional to 2,706.56, 4,058.20 and 974.80 is: 1,461.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,706.56 : 4,058.20 = 974.80 : x
  2. Step 2: Convert to fraction form
    2,706.56/4,058.20 = 974.80/x
  3. Step 3: Cross multiply
    2,706.56x = 4,058.20 × 974.80
  4. Step 4: Simplify right side
    2,706.56x = 3,955,933.36
  5. Step 5: Solve for x
    x = 3,955,933.36/2,706.56
  6. Step 6: Final answer
    x = 1,461.61

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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.