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Finding the Fourth Proportional to 57,686.70, 86,530.05 and 41,940.30

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Solution

The fourth proportional to 57,686.70, 86,530.05 and 41,940.30 is: 62,910.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,686.70 : 86,530.05 = 41,940.30 : x
  2. Step 2: Convert to fraction form
    57,686.70/86,530.05 = 41,940.30/x
  3. Step 3: Cross multiply
    57,686.70x = 86,530.05 × 41,940.30
  4. Step 4: Simplify right side
    57,686.70x = 3,629,096,256.02
  5. Step 5: Solve for x
    x = 3,629,096,256.02/57,686.70
  6. Step 6: Final answer
    x = 62,910.45

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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.