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Finding the Third Proportional to 931.88 and 2,005.13

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Solution

The third proportional to 931.88 and 2,005.13 is: 4,314.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    931.88 : 2,005.13 = 2,005.13 : x
  2. Step 2: Convert to fraction form
    931.88/2,005.13 = 2,005.13/x
  3. Step 3: Cross multiply
    931.88x = 2,005.13 × 2,005.13
  4. Step 4: Simplify right side
    931.88x = 4,020,526.27
  5. Step 5: Solve for x
    x = 4,020,526.27/931.88
  6. Step 6: Final answer
    x = 4,314.45

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.