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Finding the Fourth Proportional to 31,295.57, 46,928.77 and 18,151.70

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Solution

The fourth proportional to 31,295.57, 46,928.77 and 18,151.70 is: 27,219.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,295.57 : 46,928.77 = 18,151.70 : x
  2. Step 2: Convert to fraction form
    31,295.57/46,928.77 = 18,151.70/x
  3. Step 3: Cross multiply
    31,295.57x = 46,928.77 × 18,151.70
  4. Step 4: Simplify right side
    31,295.57x = 851,836,674.39
  5. Step 5: Solve for x
    x = 851,836,674.39/31,295.57
  6. Step 6: Final answer
    x = 27,219.09

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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.