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Finding the Third Proportional to 984.47 and 2,130.56

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Solution

The third proportional to 984.47 and 2,130.56 is: 4,610.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    984.47 : 2,130.56 = 2,130.56 : x
  2. Step 2: Convert to fraction form
    984.47/2,130.56 = 2,130.56/x
  3. Step 3: Cross multiply
    984.47x = 2,130.56 × 2,130.56
  4. Step 4: Simplify right side
    984.47x = 4,539,296.57
  5. Step 5: Solve for x
    x = 4,539,296.57/984.47
  6. Step 6: Final answer
    x = 4,610.91

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.