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Finding the Fourth Proportional to 31,842.66, 43,929.22 and 19,885.22

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Solution

The fourth proportional to 31,842.66, 43,929.22 and 19,885.22 is: 27,433.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,842.66 : 43,929.22 = 19,885.22 : x
  2. Step 2: Convert to fraction form
    31,842.66/43,929.22 = 19,885.22/x
  3. Step 3: Cross multiply
    31,842.66x = 43,929.22 × 19,885.22
  4. Step 4: Simplify right side
    31,842.66x = 873,542,204.13
  5. Step 5: Solve for x
    x = 873,542,204.13/31,842.66
  6. Step 6: Final answer
    x = 27,433.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.