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Finding the Fourth Proportional to 121,297.92, 167,393.28 and 67,584

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Solution

The fourth proportional to 121,297.92, 167,393.28 and 67,584 is: 93,267.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,297.92 : 167,393.28 = 67,584 : x
  2. Step 2: Convert to fraction form
    121,297.92/167,393.28 = 67,584/x
  3. Step 3: Cross multiply
    121,297.92x = 167,393.28 × 67,584
  4. Step 4: Simplify right side
    121,297.92x = 11,313,107,435.52
  5. Step 5: Solve for x
    x = 11,313,107,435.52/121,297.92
  6. Step 6: Final answer
    x = 93,267.12

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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.