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Finding the Third Proportional to 79,990 and 114,312

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Solution

The third proportional to 79,990 and 114,312 is: 163,360.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,990 : 114,312 = 114,312 : x
  2. Step 2: Convert to fraction form
    79,990/114,312 = 114,312/x
  3. Step 3: Cross multiply
    79,990x = 114,312 × 114,312
  4. Step 4: Simplify right side
    79,990x = 13,067,233,344
  5. Step 5: Solve for x
    x = 13,067,233,344/79,990
  6. Step 6: Final answer
    x = 163,360.84

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Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.