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Finding the Fourth Proportional to 122,218.63, 168,661.17 and 68,503.65

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Solution

The fourth proportional to 122,218.63, 168,661.17 and 68,503.65 is: 94,534.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,218.63 : 168,661.17 = 68,503.65 : x
  2. Step 2: Convert to fraction form
    122,218.63/168,661.17 = 68,503.65/x
  3. Step 3: Cross multiply
    122,218.63x = 168,661.17 × 68,503.65
  4. Step 4: Simplify right side
    122,218.63x = 11,553,905,758.27
  5. Step 5: Solve for x
    x = 11,553,905,758.27/122,218.63
  6. Step 6: Final answer
    x = 94,534.73

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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.