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Finding the Third Proportional to 1,113.66 and 2,405.63

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Solution

The third proportional to 1,113.66 and 2,405.63 is: 5,196.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,113.66 : 2,405.63 = 2,405.63 : x
  2. Step 2: Convert to fraction form
    1,113.66/2,405.63 = 2,405.63/x
  3. Step 3: Cross multiply
    1,113.66x = 2,405.63 × 2,405.63
  4. Step 4: Simplify right side
    1,113.66x = 5,787,031.64
  5. Step 5: Solve for x
    x = 5,787,031.64/1,113.66
  6. Step 6: Final answer
    x = 5,196.43

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.