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Finding the Fourth Proportional to 39,703.56, 59,548.50 and 11,242.50

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Solution

The fourth proportional to 39,703.56, 59,548.50 and 11,242.50 is: 16,861.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,703.56 : 59,548.50 = 11,242.50 : x
  2. Step 2: Convert to fraction form
    39,703.56/59,548.50 = 11,242.50/x
  3. Step 3: Cross multiply
    39,703.56x = 59,548.50 × 11,242.50
  4. Step 4: Simplify right side
    39,703.56x = 669,474,011.25
  5. Step 5: Solve for x
    x = 669,474,011.25/39,703.56
  6. Step 6: Final answer
    x = 16,861.81

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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.