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Finding the Third Proportional to 60,639.75 and 90,367

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Solution

The third proportional to 60,639.75 and 90,367 is: 134,667.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,639.75 : 90,367 = 90,367 : x
  2. Step 2: Convert to fraction form
    60,639.75/90,367 = 90,367/x
  3. Step 3: Cross multiply
    60,639.75x = 90,367 × 90,367
  4. Step 4: Simplify right side
    60,639.75x = 8,166,194,689
  5. Step 5: Solve for x
    x = 8,166,194,689/60,639.75
  6. Step 6: Final answer
    x = 134,667.35

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.