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Finding the Third Proportional to 56,913.75 and 85,554

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Solution

The third proportional to 56,913.75 and 85,554 is: 128,606.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,913.75 : 85,554 = 85,554 : x
  2. Step 2: Convert to fraction form
    56,913.75/85,554 = 85,554/x
  3. Step 3: Cross multiply
    56,913.75x = 85,554 × 85,554
  4. Step 4: Simplify right side
    56,913.75x = 7,319,486,916
  5. Step 5: Solve for x
    x = 7,319,486,916/56,913.75
  6. Step 6: Final answer
    x = 128,606.65

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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.