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Finding the Third Proportional to 886.78 and 1,903.50

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Solution

The third proportional to 886.78 and 1,903.50 is: 4,085.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    886.78 : 1,903.50 = 1,903.50 : x
  2. Step 2: Convert to fraction form
    886.78/1,903.50 = 1,903.50/x
  3. Step 3: Cross multiply
    886.78x = 1,903.50 × 1,903.50
  4. Step 4: Simplify right side
    886.78x = 3,623,312.25
  5. Step 5: Solve for x
    x = 3,623,312.25/886.78
  6. Step 6: Final answer
    x = 4,085.91

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.