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Finding the Fourth Proportional to 118,603.73, 163,680.41 and 68,318.93

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Solution

The fourth proportional to 118,603.73, 163,680.41 and 68,318.93 is: 94,284.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,603.73 : 163,680.41 = 68,318.93 : x
  2. Step 2: Convert to fraction form
    118,603.73/163,680.41 = 68,318.93/x
  3. Step 3: Cross multiply
    118,603.73x = 163,680.41 × 68,318.93
  4. Step 4: Simplify right side
    118,603.73x = 11,182,470,473.16
  5. Step 5: Solve for x
    x = 11,182,470,473.16/118,603.73
  6. Step 6: Final answer
    x = 94,284.31

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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.