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Finding the Third Proportional to 122,328 and 189,058

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Solution

The third proportional to 122,328 and 189,058 is: 292,189.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,328 : 189,058 = 189,058 : x
  2. Step 2: Convert to fraction form
    122,328/189,058 = 189,058/x
  3. Step 3: Cross multiply
    122,328x = 189,058 × 189,058
  4. Step 4: Simplify right side
    122,328x = 35,742,927,364
  5. Step 5: Solve for x
    x = 35,742,927,364/122,328
  6. Step 6: Final answer
    x = 292,189.26

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.