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Finding the Fourth Proportional to 125,443.73, 173,109.46 and 68,083.15

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Solution

The fourth proportional to 125,443.73, 173,109.46 and 68,083.15 is: 93,953.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,443.73 : 173,109.46 = 68,083.15 : x
  2. Step 2: Convert to fraction form
    125,443.73/173,109.46 = 68,083.15/x
  3. Step 3: Cross multiply
    125,443.73x = 173,109.46 × 68,083.15
  4. Step 4: Simplify right side
    125,443.73x = 11,785,837,331.60
  5. Step 5: Solve for x
    x = 11,785,837,331.60/125,443.73
  6. Step 6: Final answer
    x = 93,953.18

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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.