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Finding the Fourth Proportional to 1,974.96, 2,961.63 and 741.74

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Solution

The fourth proportional to 1,974.96, 2,961.63 and 741.74 is: 1,112.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,974.96 : 2,961.63 = 741.74 : x
  2. Step 2: Convert to fraction form
    1,974.96/2,961.63 = 741.74/x
  3. Step 3: Cross multiply
    1,974.96x = 2,961.63 × 741.74
  4. Step 4: Simplify right side
    1,974.96x = 2,196,744.63
  5. Step 5: Solve for x
    x = 2,196,744.63/1,974.96
  6. Step 6: Final answer
    x = 1,112.30

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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.