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Finding the Fourth Proportional to 31,274.66, 46,912.14 and 7,901.12

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Solution

The fourth proportional to 31,274.66, 46,912.14 and 7,901.12 is: 11,851.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,274.66 : 46,912.14 = 7,901.12 : x
  2. Step 2: Convert to fraction form
    31,274.66/46,912.14 = 7,901.12/x
  3. Step 3: Cross multiply
    31,274.66x = 46,912.14 × 7,901.12
  4. Step 4: Simplify right side
    31,274.66x = 370,658,213.04
  5. Step 5: Solve for x
    x = 370,658,213.04/31,274.66
  6. Step 6: Final answer
    x = 11,851.71

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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.