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Finding the Third Proportional to 848 and 1,139

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Solution

The third proportional to 848 and 1,139 is: 1,529.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    848 : 1,139 = 1,139 : x
  2. Step 2: Convert to fraction form
    848/1,139 = 1,139/x
  3. Step 3: Cross multiply
    848x = 1,139 × 1,139
  4. Step 4: Simplify right side
    848x = 1,297,321
  5. Step 5: Solve for x
    x = 1,297,321/848
  6. Step 6: Final answer
    x = 1,529.86

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Why These Related Problems?

These problems maintain the same ratio (1.34) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.