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Finding the Fourth Proportional to 3,116.75, 4,676.00 and 925.56

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Solution

The fourth proportional to 3,116.75, 4,676.00 and 925.56 is: 1,388.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,116.75 : 4,676.00 = 925.56 : x
  2. Step 2: Convert to fraction form
    3,116.75/4,676.00 = 925.56/x
  3. Step 3: Cross multiply
    3,116.75x = 4,676.00 × 925.56
  4. Step 4: Simplify right side
    3,116.75x = 4,327,913.93
  5. Step 5: Solve for x
    x = 4,327,913.93/3,116.75
  6. Step 6: Final answer
    x = 1,388.60

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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.