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Finding the Fourth Proportional to 124,610.16, 171,961.12 and 68,021.52

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Solution

The fourth proportional to 124,610.16, 171,961.12 and 68,021.52 is: 93,869.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,610.16 : 171,961.12 = 68,021.52 : x
  2. Step 2: Convert to fraction form
    124,610.16/171,961.12 = 68,021.52/x
  3. Step 3: Cross multiply
    124,610.16x = 171,961.12 × 68,021.52
  4. Step 4: Simplify right side
    124,610.16x = 11,697,056,763.30
  5. Step 5: Solve for x
    x = 11,697,056,763.30/124,610.16
  6. Step 6: Final answer
    x = 93,869.21

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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.