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Finding the Fourth Proportional to 93,138.14, 139,708.49 and 26,578.25

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Solution

The fourth proportional to 93,138.14, 139,708.49 and 26,578.25 is: 39,867.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,138.14 : 139,708.49 = 26,578.25 : x
  2. Step 2: Convert to fraction form
    93,138.14/139,708.49 = 26,578.25/x
  3. Step 3: Cross multiply
    93,138.14x = 139,708.49 × 26,578.25
  4. Step 4: Simplify right side
    93,138.14x = 3,713,206,342.91
  5. Step 5: Solve for x
    x = 3,713,206,342.91/93,138.14
  6. Step 6: Final answer
    x = 39,867.73

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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.