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Finding the Fourth Proportional to 2,616.18, 3,923.04 and 971.60

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Solution

The fourth proportional to 2,616.18, 3,923.04 and 971.60 is: 1,456.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,616.18 : 3,923.04 = 971.60 : x
  2. Step 2: Convert to fraction form
    2,616.18/3,923.04 = 971.60/x
  3. Step 3: Cross multiply
    2,616.18x = 3,923.04 × 971.60
  4. Step 4: Simplify right side
    2,616.18x = 3,811,625.66
  5. Step 5: Solve for x
    x = 3,811,625.66/2,616.18
  6. Step 6: Final answer
    x = 1,456.94

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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.