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Finding the Third Proportional to 903.50 and 1,259

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Solution

The third proportional to 903.50 and 1,259 is: 1,754.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    903.50 : 1,259 = 1,259 : x
  2. Step 2: Convert to fraction form
    903.50/1,259 = 1,259/x
  3. Step 3: Cross multiply
    903.50x = 1,259 × 1,259
  4. Step 4: Simplify right side
    903.50x = 1,585,081
  5. Step 5: Solve for x
    x = 1,585,081/903.50
  6. Step 6: Final answer
    x = 1,754.38

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.