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Finding the Third Proportional to 856.50 and 1,341

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Solution

The third proportional to 856.50 and 1,341 is: 2,099.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    856.50 : 1,341 = 1,341 : x
  2. Step 2: Convert to fraction form
    856.50/1,341 = 1,341/x
  3. Step 3: Cross multiply
    856.50x = 1,341 × 1,341
  4. Step 4: Simplify right side
    856.50x = 1,798,281
  5. Step 5: Solve for x
    x = 1,798,281/856.50
  6. Step 6: Final answer
    x = 2,099.57

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.