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Finding the Third Proportional to 4,232 and 9,128

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Solution

The third proportional to 4,232 and 9,128 is: 19,688.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,232 : 9,128 = 9,128 : x
  2. Step 2: Convert to fraction form
    4,232/9,128 = 9,128/x
  3. Step 3: Cross multiply
    4,232x = 9,128 × 9,128
  4. Step 4: Simplify right side
    4,232x = 83,320,384
  5. Step 5: Solve for x
    x = 83,320,384/4,232
  6. Step 6: Final answer
    x = 19,688.18

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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.