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Finding the Fourth Proportional to 124,386.17, 171,724.05 and 82,018.58

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Solution

The fourth proportional to 124,386.17, 171,724.05 and 82,018.58 is: 113,232.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,386.17 : 171,724.05 = 82,018.58 : x
  2. Step 2: Convert to fraction form
    124,386.17/171,724.05 = 82,018.58/x
  3. Step 3: Cross multiply
    124,386.17x = 171,724.05 × 82,018.58
  4. Step 4: Simplify right side
    124,386.17x = 14,084,561,874.23
  5. Step 5: Solve for x
    x = 14,084,561,874.23/124,386.17
  6. Step 6: Final answer
    x = 113,232.54

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.