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Finding the Fourth Proportional to 31,879.02, 47,818.14 and 14,336.46

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Solution

The fourth proportional to 31,879.02, 47,818.14 and 14,336.46 is: 21,504.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,879.02 : 47,818.14 = 14,336.46 : x
  2. Step 2: Convert to fraction form
    31,879.02/47,818.14 = 14,336.46/x
  3. Step 3: Cross multiply
    31,879.02x = 47,818.14 × 14,336.46
  4. Step 4: Simplify right side
    31,879.02x = 685,542,851.38
  5. Step 5: Solve for x
    x = 685,542,851.38/31,879.02
  6. Step 6: Final answer
    x = 21,504.51

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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.