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Finding the Third Proportional to 537.50 and 1,157

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Solution

The third proportional to 537.50 and 1,157 is: 2,490.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    537.50 : 1,157 = 1,157 : x
  2. Step 2: Convert to fraction form
    537.50/1,157 = 1,157/x
  3. Step 3: Cross multiply
    537.50x = 1,157 × 1,157
  4. Step 4: Simplify right side
    537.50x = 1,338,649
  5. Step 5: Solve for x
    x = 1,338,649/537.50
  6. Step 6: Final answer
    x = 2,490.51

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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.