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Finding the Third Proportional to 4,842.75 and 7,474.50

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Solution

The third proportional to 4,842.75 and 7,474.50 is: 11,536.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,842.75 : 7,474.50 = 7,474.50 : x
  2. Step 2: Convert to fraction form
    4,842.75/7,474.50 = 7,474.50/x
  3. Step 3: Cross multiply
    4,842.75x = 7,474.50 × 7,474.50
  4. Step 4: Simplify right side
    4,842.75x = 55,868,150.25
  5. Step 5: Solve for x
    x = 55,868,150.25/4,842.75
  6. Step 6: Final answer
    x = 11,536.45

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.