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Finding the Third Proportional to 1,988 and 4,360

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Solution

The third proportional to 1,988 and 4,360 is: 9,562.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,988 : 4,360 = 4,360 : x
  2. Step 2: Convert to fraction form
    1,988/4,360 = 4,360/x
  3. Step 3: Cross multiply
    1,988x = 4,360 × 4,360
  4. Step 4: Simplify right side
    1,988x = 19,009,600
  5. Step 5: Solve for x
    x = 19,009,600/1,988
  6. Step 6: Final answer
    x = 9,562.17

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.