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Finding the Fourth Proportional to 122,186.57, 168,624.45 and 68,488.92

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Solution

The fourth proportional to 122,186.57, 168,624.45 and 68,488.92 is: 94,518.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,186.57 : 168,624.45 = 68,488.92 : x
  2. Step 2: Convert to fraction form
    122,186.57/168,624.45 = 68,488.92/x
  3. Step 3: Cross multiply
    122,186.57x = 168,624.45 × 68,488.92
  4. Step 4: Simplify right side
    122,186.57x = 11,548,906,466.09
  5. Step 5: Solve for x
    x = 11,548,906,466.09/122,186.57
  6. Step 6: Final answer
    x = 94,518.63

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1.5x scale

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.