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Finding the Third Proportional to 983.63 and 2,140.13

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Solution

The third proportional to 983.63 and 2,140.13 is: 4,656.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    983.63 : 2,140.13 = 2,140.13 : x
  2. Step 2: Convert to fraction form
    983.63/2,140.13 = 2,140.13/x
  3. Step 3: Cross multiply
    983.63x = 2,140.13 × 2,140.13
  4. Step 4: Simplify right side
    983.63x = 4,580,135.02
  5. Step 5: Solve for x
    x = 4,580,135.02/983.63
  6. Step 6: Final answer
    x = 4,656.38

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.