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Finding the Third Proportional to 197.88 and 432.50

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Solution

The third proportional to 197.88 and 432.50 is: 945.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    197.88 : 432.50 = 432.50 : x
  2. Step 2: Convert to fraction form
    197.88/432.50 = 432.50/x
  3. Step 3: Cross multiply
    197.88x = 432.50 × 432.50
  4. Step 4: Simplify right side
    197.88x = 187,056.25
  5. Step 5: Solve for x
    x = 187,056.25/197.88
  6. Step 6: Final answer
    x = 945.33

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.