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Finding the Third Proportional to 66,964 and 103,772

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Solution

The third proportional to 66,964 and 103,772 is: 160,812.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,964 : 103,772 = 103,772 : x
  2. Step 2: Convert to fraction form
    66,964/103,772 = 103,772/x
  3. Step 3: Cross multiply
    66,964x = 103,772 × 103,772
  4. Step 4: Simplify right side
    66,964x = 10,768,627,984
  5. Step 5: Solve for x
    x = 10,768,627,984/66,964
  6. Step 6: Final answer
    x = 160,812.20

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.