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Finding the Third Proportional to 86,939.50 and 190,503.50

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Solution

The third proportional to 86,939.50 and 190,503.50 is: 417,434.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,939.50 : 190,503.50 = 190,503.50 : x
  2. Step 2: Convert to fraction form
    86,939.50/190,503.50 = 190,503.50/x
  3. Step 3: Cross multiply
    86,939.50x = 190,503.50 × 190,503.50
  4. Step 4: Simplify right side
    86,939.50x = 36,291,583,512.25
  5. Step 5: Solve for x
    x = 36,291,583,512.25/86,939.50
  6. Step 6: Final answer
    x = 417,434.92

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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.