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Finding the Third Proportional to 158,987 and 336,928

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Solution

The third proportional to 158,987 and 336,928 is: 714,023.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,987 : 336,928 = 336,928 : x
  2. Step 2: Convert to fraction form
    158,987/336,928 = 336,928/x
  3. Step 3: Cross multiply
    158,987x = 336,928 × 336,928
  4. Step 4: Simplify right side
    158,987x = 113,520,477,184
  5. Step 5: Solve for x
    x = 113,520,477,184/158,987
  6. Step 6: Final answer
    x = 714,023.64

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.