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Finding the Fourth Proportional to 57,188.40, 85,859.55 and 33,520.20

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Solution

The fourth proportional to 57,188.40, 85,859.55 and 33,520.20 is: 50,325.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,188.40 : 85,859.55 = 33,520.20 : x
  2. Step 2: Convert to fraction form
    57,188.40/85,859.55 = 33,520.20/x
  3. Step 3: Cross multiply
    57,188.40x = 85,859.55 × 33,520.20
  4. Step 4: Simplify right side
    57,188.40x = 2,878,029,287.91
  5. Step 5: Solve for x
    x = 2,878,029,287.91/57,188.40
  6. Step 6: Final answer
    x = 50,325.40

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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.