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Finding the Fourth Proportional to 125,388.18, 173,035.01 and 68,028.64

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Solution

The fourth proportional to 125,388.18, 173,035.01 and 68,028.64 is: 93,879.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,388.18 : 173,035.01 = 68,028.64 : x
  2. Step 2: Convert to fraction form
    125,388.18/173,035.01 = 68,028.64/x
  3. Step 3: Cross multiply
    125,388.18x = 173,035.01 × 68,028.64
  4. Step 4: Simplify right side
    125,388.18x = 11,771,336,402.69
  5. Step 5: Solve for x
    x = 11,771,336,402.69/125,388.18
  6. Step 6: Final answer
    x = 93,879.16

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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.