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Finding the Fourth Proportional to 68,967.99, 103,451.32 and 40,867.82

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Solution

The fourth proportional to 68,967.99, 103,451.32 and 40,867.82 is: 61,301.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,967.99 : 103,451.32 = 40,867.82 : x
  2. Step 2: Convert to fraction form
    68,967.99/103,451.32 = 40,867.82/x
  3. Step 3: Cross multiply
    68,967.99x = 103,451.32 × 40,867.82
  4. Step 4: Simplify right side
    68,967.99x = 4,227,829,846.29
  5. Step 5: Solve for x
    x = 4,227,829,846.29/68,967.99
  6. Step 6: Final answer
    x = 61,301.33

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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.