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Finding the Third Proportional to 9,991.13 and 14,918.63

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Solution

The third proportional to 9,991.13 and 14,918.63 is: 22,276.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,991.13 : 14,918.63 = 14,918.63 : x
  2. Step 2: Convert to fraction form
    9,991.13/14,918.63 = 14,918.63/x
  3. Step 3: Cross multiply
    9,991.13x = 14,918.63 × 14,918.63
  4. Step 4: Simplify right side
    9,991.13x = 222,565,371.89
  5. Step 5: Solve for x
    x = 222,565,371.89/9,991.13
  6. Step 6: Final answer
    x = 22,276.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.