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Finding the Third Proportional to 1,113.75 and 1,670.63

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Solution

The third proportional to 1,113.75 and 1,670.63 is: 2,505.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,113.75 : 1,670.63 = 1,670.63 : x
  2. Step 2: Convert to fraction form
    1,113.75/1,670.63 = 1,670.63/x
  3. Step 3: Cross multiply
    1,113.75x = 1,670.63 × 1,670.63
  4. Step 4: Simplify right side
    1,113.75x = 2,790,987.89
  5. Step 5: Solve for x
    x = 2,790,987.89/1,113.75
  6. Step 6: Final answer
    x = 2,505.94

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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.