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Finding the Fourth Proportional to 118,638.06, 163,724.62 and 67,658.46

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Solution

The fourth proportional to 118,638.06, 163,724.62 and 67,658.46 is: 93,371.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,638.06 : 163,724.62 = 67,658.46 : x
  2. Step 2: Convert to fraction form
    118,638.06/163,724.62 = 67,658.46/x
  3. Step 3: Cross multiply
    118,638.06x = 163,724.62 × 67,658.46
  4. Step 4: Simplify right side
    118,638.06x = 11,077,355,653.29
  5. Step 5: Solve for x
    x = 11,077,355,653.29/118,638.06
  6. Step 6: Final answer
    x = 93,371.01

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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.