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Finding the Third Proportional to 55,554 and 79,386

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Solution

The third proportional to 55,554 and 79,386 is: 113,441.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,554 : 79,386 = 79,386 : x
  2. Step 2: Convert to fraction form
    55,554/79,386 = 79,386/x
  3. Step 3: Cross multiply
    55,554x = 79,386 × 79,386
  4. Step 4: Simplify right side
    55,554x = 6,302,136,996
  5. Step 5: Solve for x
    x = 6,302,136,996/55,554
  6. Step 6: Final answer
    x = 113,441.64

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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.