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Finding the Third Proportional to 124,290 and 196,899

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Solution

The third proportional to 124,290 and 196,899 is: 311,925.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,290 : 196,899 = 196,899 : x
  2. Step 2: Convert to fraction form
    124,290/196,899 = 196,899/x
  3. Step 3: Cross multiply
    124,290x = 196,899 × 196,899
  4. Step 4: Simplify right side
    124,290x = 38,769,216,201
  5. Step 5: Solve for x
    x = 38,769,216,201/124,290
  6. Step 6: Final answer
    x = 311,925.47

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Why These Related Problems?

These problems maintain the same ratio (1.58) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.