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Finding the Fourth Proportional to 33,875.20, 50,715.60 and 20,753.20

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Solution

The fourth proportional to 33,875.20, 50,715.60 and 20,753.20 is: 31,070.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,875.20 : 50,715.60 = 20,753.20 : x
  2. Step 2: Convert to fraction form
    33,875.20/50,715.60 = 20,753.20/x
  3. Step 3: Cross multiply
    33,875.20x = 50,715.60 × 20,753.20
  4. Step 4: Simplify right side
    33,875.20x = 1,052,510,989.92
  5. Step 5: Solve for x
    x = 1,052,510,989.92/33,875.20
  6. Step 6: Final answer
    x = 31,070.25

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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.