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Finding the Fourth Proportional to 99,188.22, 136,879.20 and 53,865.78

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Solution

The fourth proportional to 99,188.22, 136,879.20 and 53,865.78 is: 74,334.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,188.22 : 136,879.20 = 53,865.78 : x
  2. Step 2: Convert to fraction form
    99,188.22/136,879.20 = 53,865.78/x
  3. Step 3: Cross multiply
    99,188.22x = 136,879.20 × 53,865.78
  4. Step 4: Simplify right side
    99,188.22x = 7,373,104,873.78
  5. Step 5: Solve for x
    x = 7,373,104,873.78/99,188.22
  6. Step 6: Final answer
    x = 74,334.48

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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.