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Finding the Fourth Proportional to 39,777.57, 59,666.49 and 13,500.90

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Solution

The fourth proportional to 39,777.57, 59,666.49 and 13,500.90 is: 20,251.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,777.57 : 59,666.49 = 13,500.90 : x
  2. Step 2: Convert to fraction form
    39,777.57/59,666.49 = 13,500.90/x
  3. Step 3: Cross multiply
    39,777.57x = 59,666.49 × 13,500.90
  4. Step 4: Simplify right side
    39,777.57x = 805,551,314.84
  5. Step 5: Solve for x
    x = 805,551,314.84/39,777.57
  6. Step 6: Final answer
    x = 20,251.40

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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.