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Finding the Fourth Proportional to 39,240.64, 58,863.84 and 11,539.84

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Solution

The fourth proportional to 39,240.64, 58,863.84 and 11,539.84 is: 17,310.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,240.64 : 58,863.84 = 11,539.84 : x
  2. Step 2: Convert to fraction form
    39,240.64/58,863.84 = 11,539.84/x
  3. Step 3: Cross multiply
    39,240.64x = 58,863.84 × 11,539.84
  4. Step 4: Simplify right side
    39,240.64x = 679,279,295.39
  5. Step 5: Solve for x
    x = 679,279,295.39/39,240.64
  6. Step 6: Final answer
    x = 17,310.61

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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.