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Finding the Fourth Proportional to 124,616.57, 171,973.82 and 68,028.35

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Solution

The fourth proportional to 124,616.57, 171,973.82 and 68,028.35 is: 93,880.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,616.57 : 171,973.82 = 68,028.35 : x
  2. Step 2: Convert to fraction form
    124,616.57/171,973.82 = 68,028.35/x
  3. Step 3: Cross multiply
    124,616.57x = 171,973.82 × 68,028.35
  4. Step 4: Simplify right side
    124,616.57x = 11,699,095,217.80
  5. Step 5: Solve for x
    x = 11,699,095,217.80/124,616.57
  6. Step 6: Final answer
    x = 93,880.74

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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.