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Finding the Fourth Proportional to 31,003.80, 46,505.70 and 27,310.20

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Solution

The fourth proportional to 31,003.80, 46,505.70 and 27,310.20 is: 40,965.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,003.80 : 46,505.70 = 27,310.20 : x
  2. Step 2: Convert to fraction form
    31,003.80/46,505.70 = 27,310.20/x
  3. Step 3: Cross multiply
    31,003.80x = 46,505.70 × 27,310.20
  4. Step 4: Simplify right side
    31,003.80x = 1,270,079,968.14
  5. Step 5: Solve for x
    x = 1,270,079,968.14/31,003.80
  6. Step 6: Final answer
    x = 40,965.30

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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.