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Finding the Third Proportional to 505.50 and 1,113

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Solution

The third proportional to 505.50 and 1,113 is: 2,450.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    505.50 : 1,113 = 1,113 : x
  2. Step 2: Convert to fraction form
    505.50/1,113 = 1,113/x
  3. Step 3: Cross multiply
    505.50x = 1,113 × 1,113
  4. Step 4: Simplify right side
    505.50x = 1,238,769
  5. Step 5: Solve for x
    x = 1,238,769/505.50
  6. Step 6: Final answer
    x = 2,450.58

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.