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Finding the Fourth Proportional to 1,794.22, 2,475.90 and 997.65

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Solution

The fourth proportional to 1,794.22, 2,475.90 and 997.65 is: 1,376.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,794.22 : 2,475.90 = 997.65 : x
  2. Step 2: Convert to fraction form
    1,794.22/2,475.90 = 997.65/x
  3. Step 3: Cross multiply
    1,794.22x = 2,475.90 × 997.65
  4. Step 4: Simplify right side
    1,794.22x = 2,470,081.64
  5. Step 5: Solve for x
    x = 2,470,081.64/1,794.22
  6. Step 6: Final answer
    x = 1,376.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.