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Finding the Fourth Proportional to 53,950.68, 80,926.79 and 20,672.43

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Solution

The fourth proportional to 53,950.68, 80,926.79 and 20,672.43 is: 31,008.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,950.68 : 80,926.79 = 20,672.43 : x
  2. Step 2: Convert to fraction form
    53,950.68/80,926.79 = 20,672.43/x
  3. Step 3: Cross multiply
    53,950.68x = 80,926.79 × 20,672.43
  4. Step 4: Simplify right side
    53,950.68x = 1,672,953,298.04
  5. Step 5: Solve for x
    x = 1,672,953,298.04/53,950.68
  6. Step 6: Final answer
    x = 31,008.94

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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.