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Finding the Fourth Proportional to 68,788.36, 103,188.06 and 29,345.86

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Solution

The fourth proportional to 68,788.36, 103,188.06 and 29,345.86 is: 44,021.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,788.36 : 103,188.06 = 29,345.86 : x
  2. Step 2: Convert to fraction form
    68,788.36/103,188.06 = 29,345.86/x
  3. Step 3: Cross multiply
    68,788.36x = 103,188.06 × 29,345.86
  4. Step 4: Simplify right side
    68,788.36x = 3,028,142,362.43
  5. Step 5: Solve for x
    x = 3,028,142,362.43/68,788.36
  6. Step 6: Final answer
    x = 44,021.14

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.