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Finding the Fourth Proportional to 125,503.25, 173,195.96 and 68,143.25

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Solution

The fourth proportional to 125,503.25, 173,195.96 and 68,143.25 is: 94,038.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,503.25 : 173,195.96 = 68,143.25 : x
  2. Step 2: Convert to fraction form
    125,503.25/173,195.96 = 68,143.25/x
  3. Step 3: Cross multiply
    125,503.25x = 173,195.96 × 68,143.25
  4. Step 4: Simplify right side
    125,503.25x = 11,802,135,693.54
  5. Step 5: Solve for x
    x = 11,802,135,693.54/125,503.25
  6. Step 6: Final answer
    x = 94,038.49

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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.