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Finding the Third Proportional to 929.50 and 1,491

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Solution

The third proportional to 929.50 and 1,491 is: 2,391.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    929.50 : 1,491 = 1,491 : x
  2. Step 2: Convert to fraction form
    929.50/1,491 = 1,491/x
  3. Step 3: Cross multiply
    929.50x = 1,491 × 1,491
  4. Step 4: Simplify right side
    929.50x = 2,223,081
  5. Step 5: Solve for x
    x = 2,223,081/929.50
  6. Step 6: Final answer
    x = 2,391.70

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Why These Related Problems?

These problems maintain the same ratio (1.60) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.