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Finding the Fourth Proportional to 57,208.80, 85,813.20 and 33,861.60

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Solution

The fourth proportional to 57,208.80, 85,813.20 and 33,861.60 is: 50,792.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,208.80 : 85,813.20 = 33,861.60 : x
  2. Step 2: Convert to fraction form
    57,208.80/85,813.20 = 33,861.60/x
  3. Step 3: Cross multiply
    57,208.80x = 85,813.20 × 33,861.60
  4. Step 4: Simplify right side
    57,208.80x = 2,905,772,253.12
  5. Step 5: Solve for x
    x = 2,905,772,253.12/57,208.80
  6. Step 6: Final answer
    x = 50,792.40

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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.