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Finding the Third Proportional to 21,376.50 and 34,113

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Solution

The third proportional to 21,376.50 and 34,113 is: 54,438.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,376.50 : 34,113 = 34,113 : x
  2. Step 2: Convert to fraction form
    21,376.50/34,113 = 34,113/x
  3. Step 3: Cross multiply
    21,376.50x = 34,113 × 34,113
  4. Step 4: Simplify right side
    21,376.50x = 1,163,696,769
  5. Step 5: Solve for x
    x = 1,163,696,769/21,376.50
  6. Step 6: Final answer
    x = 54,438.13

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Why These Related Problems?

These problems maintain the same ratio (1.60) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.