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Finding the Third Proportional to 711.50 and 1,179

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Solution

The third proportional to 711.50 and 1,179 is: 1,953.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    711.50 : 1,179 = 1,179 : x
  2. Step 2: Convert to fraction form
    711.50/1,179 = 1,179/x
  3. Step 3: Cross multiply
    711.50x = 1,179 × 1,179
  4. Step 4: Simplify right side
    711.50x = 1,390,041
  5. Step 5: Solve for x
    x = 1,390,041/711.50
  6. Step 6: Final answer
    x = 1,953.68

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Why These Related Problems?

These problems maintain the same ratio (1.66) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.