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Finding the Third Proportional to 2,088.75 and 3,128.25

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Solution

The third proportional to 2,088.75 and 3,128.25 is: 4,685.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,088.75 : 3,128.25 = 3,128.25 : x
  2. Step 2: Convert to fraction form
    2,088.75/3,128.25 = 3,128.25/x
  3. Step 3: Cross multiply
    2,088.75x = 3,128.25 × 3,128.25
  4. Step 4: Simplify right side
    2,088.75x = 9,785,948.06
  5. Step 5: Solve for x
    x = 9,785,948.06/2,088.75
  6. Step 6: Final answer
    x = 4,685.07

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.