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Finding the Fourth Proportional to 39,765.50, 59,658.60 and 12,063.50

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Solution

The fourth proportional to 39,765.50, 59,658.60 and 12,063.50 is: 18,098.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,765.50 : 59,658.60 = 12,063.50 : x
  2. Step 2: Convert to fraction form
    39,765.50/59,658.60 = 12,063.50/x
  3. Step 3: Cross multiply
    39,765.50x = 59,658.60 × 12,063.50
  4. Step 4: Simplify right side
    39,765.50x = 719,691,521.10
  5. Step 5: Solve for x
    x = 719,691,521.10/39,765.50
  6. Step 6: Final answer
    x = 18,098.39

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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.