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Finding the Third Proportional to 5,880 and 9,111

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Solution

The third proportional to 5,880 and 9,111 is: 14,117.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,880 : 9,111 = 9,111 : x
  2. Step 2: Convert to fraction form
    5,880/9,111 = 9,111/x
  3. Step 3: Cross multiply
    5,880x = 9,111 × 9,111
  4. Step 4: Simplify right side
    5,880x = 83,010,321
  5. Step 5: Solve for x
    x = 83,010,321/5,880
  6. Step 6: Final answer
    x = 14,117.40

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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.