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Finding the Fourth Proportional to 57,699.20, 86,548.80 and 38,016.20

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Solution

The fourth proportional to 57,699.20, 86,548.80 and 38,016.20 is: 57,024.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,699.20 : 86,548.80 = 38,016.20 : x
  2. Step 2: Convert to fraction form
    57,699.20/86,548.80 = 38,016.20/x
  3. Step 3: Cross multiply
    57,699.20x = 86,548.80 × 38,016.20
  4. Step 4: Simplify right side
    57,699.20x = 3,290,256,490.56
  5. Step 5: Solve for x
    x = 3,290,256,490.56/57,699.20
  6. Step 6: Final answer
    x = 57,024.30

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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.