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Finding the Fourth Proportional to 108,603.73, 149,822.49 and 68,339.71

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Solution

The fourth proportional to 108,603.73, 149,822.49 and 68,339.71 is: 94,276.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,603.73 : 149,822.49 = 68,339.71 : x
  2. Step 2: Convert to fraction form
    108,603.73/149,822.49 = 68,339.71/x
  3. Step 3: Cross multiply
    108,603.73x = 149,822.49 × 68,339.71
  4. Step 4: Simplify right side
    108,603.73x = 10,238,825,518.08
  5. Step 5: Solve for x
    x = 10,238,825,518.08/108,603.73
  6. Step 6: Final answer
    x = 94,276.92

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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.