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Finding the Fourth Proportional to 56,938.60, 85,472.70 and 33,578.20

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Solution

The fourth proportional to 56,938.60, 85,472.70 and 33,578.20 is: 50,405.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,938.60 : 85,472.70 = 33,578.20 : x
  2. Step 2: Convert to fraction form
    56,938.60/85,472.70 = 33,578.20/x
  3. Step 3: Cross multiply
    56,938.60x = 85,472.70 × 33,578.20
  4. Step 4: Simplify right side
    56,938.60x = 2,870,019,415.14
  5. Step 5: Solve for x
    x = 2,870,019,415.14/56,938.60
  6. Step 6: Final answer
    x = 50,405.51

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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.