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Finding the Fourth Proportional to 33,643.20, 50,464.80 and 28,459.20

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Solution

The fourth proportional to 33,643.20, 50,464.80 and 28,459.20 is: 42,688.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,643.20 : 50,464.80 = 28,459.20 : x
  2. Step 2: Convert to fraction form
    33,643.20/50,464.80 = 28,459.20/x
  3. Step 3: Cross multiply
    33,643.20x = 50,464.80 × 28,459.20
  4. Step 4: Simplify right side
    33,643.20x = 1,436,187,836.16
  5. Step 5: Solve for x
    x = 1,436,187,836.16/33,643.20
  6. Step 6: Final answer
    x = 42,688.80

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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.