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Finding the Third Proportional to 492.38 and 875.75

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Solution

The third proportional to 492.38 and 875.75 is: 1,557.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    492.38 : 875.75 = 875.75 : x
  2. Step 2: Convert to fraction form
    492.38/875.75 = 875.75/x
  3. Step 3: Cross multiply
    492.38x = 875.75 × 875.75
  4. Step 4: Simplify right side
    492.38x = 766,938.06
  5. Step 5: Solve for x
    x = 766,938.06/492.38
  6. Step 6: Final answer
    x = 1,557.63

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Why These Related Problems?

These problems maintain the same ratio (1.78) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.