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Finding the Fourth Proportional to 93,138.23, 139,708.62 and 26,578.34

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Solution

The fourth proportional to 93,138.23, 139,708.62 and 26,578.34 is: 39,867.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,138.23 : 139,708.62 = 26,578.34 : x
  2. Step 2: Convert to fraction form
    93,138.23/139,708.62 = 26,578.34/x
  3. Step 3: Cross multiply
    93,138.23x = 139,708.62 × 26,578.34
  4. Step 4: Simplify right side
    93,138.23x = 3,713,222,504.75
  5. Step 5: Solve for x
    x = 3,713,222,504.75/93,138.23
  6. Step 6: Final answer
    x = 39,867.87

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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.