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Finding the Third Proportional to 1,314.75 and 1,981.69

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Solution

The third proportional to 1,314.75 and 1,981.69 is: 2,986.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,314.75 : 1,981.69 = 1,981.69 : x
  2. Step 2: Convert to fraction form
    1,314.75/1,981.69 = 1,981.69/x
  3. Step 3: Cross multiply
    1,314.75x = 1,981.69 × 1,981.69
  4. Step 4: Simplify right side
    1,314.75x = 3,927,085.35
  5. Step 5: Solve for x
    x = 3,927,085.35/1,314.75
  6. Step 6: Final answer
    x = 2,986.94

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These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.