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Finding the Fourth Proportional to 2,316.65, 3,474.45 and 672.75

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Solution

The fourth proportional to 2,316.65, 3,474.45 and 672.75 is: 1,008.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,316.65 : 3,474.45 = 672.75 : x
  2. Step 2: Convert to fraction form
    2,316.65/3,474.45 = 672.75/x
  3. Step 3: Cross multiply
    2,316.65x = 3,474.45 × 672.75
  4. Step 4: Simplify right side
    2,316.65x = 2,337,436.24
  5. Step 5: Solve for x
    x = 2,337,436.24/2,316.65
  6. Step 6: Final answer
    x = 1,008.97

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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.