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Finding the Third Proportional to 763.50 and 1,146

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Solution

The third proportional to 763.50 and 1,146 is: 1,720.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    763.50 : 1,146 = 1,146 : x
  2. Step 2: Convert to fraction form
    763.50/1,146 = 1,146/x
  3. Step 3: Cross multiply
    763.50x = 1,146 × 1,146
  4. Step 4: Simplify right side
    763.50x = 1,313,316
  5. Step 5: Solve for x
    x = 1,313,316/763.50
  6. Step 6: Final answer
    x = 1,720.13

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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.