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Finding the Fourth Proportional to 38,561.40, 57,846.35 and 12,259.99

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Solution

The fourth proportional to 38,561.40, 57,846.35 and 12,259.99 is: 18,391.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,561.40 : 57,846.35 = 12,259.99 : x
  2. Step 2: Convert to fraction form
    38,561.40/57,846.35 = 12,259.99/x
  3. Step 3: Cross multiply
    38,561.40x = 57,846.35 × 12,259.99
  4. Step 4: Simplify right side
    38,561.40x = 709,195,775.49
  5. Step 5: Solve for x
    x = 709,195,775.49/38,561.40
  6. Step 6: Final answer
    x = 18,391.34

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.