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Finding the Fourth Proportional to 124,616.16, 171,970.56 and 68,028.48

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Solution

The fourth proportional to 124,616.16, 171,970.56 and 68,028.48 is: 93,879.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,616.16 : 171,970.56 = 68,028.48 : x
  2. Step 2: Convert to fraction form
    124,616.16/171,970.56 = 68,028.48/x
  3. Step 3: Cross multiply
    124,616.16x = 171,970.56 × 68,028.48
  4. Step 4: Simplify right side
    124,616.16x = 11,698,895,801.55
  5. Step 5: Solve for x
    x = 11,698,895,801.55/124,616.16
  6. Step 6: Final answer
    x = 93,879.44

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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.