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Finding the Fourth Proportional to 1,846.68, 2,767.53 and 921.96

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Solution

The fourth proportional to 1,846.68, 2,767.53 and 921.96 is: 1,381.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,846.68 : 2,767.53 = 921.96 : x
  2. Step 2: Convert to fraction form
    1,846.68/2,767.53 = 921.96/x
  3. Step 3: Cross multiply
    1,846.68x = 2,767.53 × 921.96
  4. Step 4: Simplify right side
    1,846.68x = 2,551,555.42
  5. Step 5: Solve for x
    x = 2,551,555.42/1,846.68
  6. Step 6: Final answer
    x = 1,381.70

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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.