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Finding the Fourth Proportional to 86,524.80, 129,765.60 and 33,205.20

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Solution

The fourth proportional to 86,524.80, 129,765.60 and 33,205.20 is: 49,799.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,524.80 : 129,765.60 = 33,205.20 : x
  2. Step 2: Convert to fraction form
    86,524.80/129,765.60 = 33,205.20/x
  3. Step 3: Cross multiply
    86,524.80x = 129,765.60 × 33,205.20
  4. Step 4: Simplify right side
    86,524.80x = 4,308,892,701.12
  5. Step 5: Solve for x
    x = 4,308,892,701.12/86,524.80
  6. Step 6: Final answer
    x = 49,799.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.