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Finding the Third Proportional to 74,648.25 and 115,587

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Solution

The third proportional to 74,648.25 and 115,587 is: 178,977.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,648.25 : 115,587 = 115,587 : x
  2. Step 2: Convert to fraction form
    74,648.25/115,587 = 115,587/x
  3. Step 3: Cross multiply
    74,648.25x = 115,587 × 115,587
  4. Step 4: Simplify right side
    74,648.25x = 13,360,354,569
  5. Step 5: Solve for x
    x = 13,360,354,569/74,648.25
  6. Step 6: Final answer
    x = 178,977.47

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.