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Finding the Fourth Proportional to 122,272.96, 168,751.20 and 79,954.24

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Solution

The fourth proportional to 122,272.96, 168,751.20 and 79,954.24 is: 110,346.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,272.96 : 168,751.20 = 79,954.24 : x
  2. Step 2: Convert to fraction form
    122,272.96/168,751.20 = 79,954.24/x
  3. Step 3: Cross multiply
    122,272.96x = 168,751.20 × 79,954.24
  4. Step 4: Simplify right side
    122,272.96x = 13,492,373,945.09
  5. Step 5: Solve for x
    x = 13,492,373,945.09/122,272.96
  6. Step 6: Final answer
    x = 110,346.34

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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.