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Finding the Fourth Proportional to 39,789.46, 59,691.75 and 11,709.46

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Solution

The fourth proportional to 39,789.46, 59,691.75 and 11,709.46 is: 17,566.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,789.46 : 59,691.75 = 11,709.46 : x
  2. Step 2: Convert to fraction form
    39,789.46/59,691.75 = 11,709.46/x
  3. Step 3: Cross multiply
    39,789.46x = 59,691.75 × 11,709.46
  4. Step 4: Simplify right side
    39,789.46x = 698,958,158.96
  5. Step 5: Solve for x
    x = 698,958,158.96/39,789.46
  6. Step 6: Final answer
    x = 17,566.41

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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.