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Finding the Fourth Proportional to 122,347.98, 168,863.26 and 79,832.70

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Solution

The fourth proportional to 122,347.98, 168,863.26 and 79,832.70 is: 110,184.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,347.98 : 168,863.26 = 79,832.70 : x
  2. Step 2: Convert to fraction form
    122,347.98/168,863.26 = 79,832.70/x
  3. Step 3: Cross multiply
    122,347.98x = 168,863.26 × 79,832.70
  4. Step 4: Simplify right side
    122,347.98x = 13,480,809,976.60
  5. Step 5: Solve for x
    x = 13,480,809,976.60/122,347.98
  6. Step 6: Final answer
    x = 110,184.16

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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.