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Finding the Fourth Proportional to 53,950.56, 80,931.45 and 20,698.44

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Solution

The fourth proportional to 53,950.56, 80,931.45 and 20,698.44 is: 31,049.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,950.56 : 80,931.45 = 20,698.44 : x
  2. Step 2: Convert to fraction form
    53,950.56/80,931.45 = 20,698.44/x
  3. Step 3: Cross multiply
    53,950.56x = 80,931.45 × 20,698.44
  4. Step 4: Simplify right side
    53,950.56x = 1,675,154,536.06
  5. Step 5: Solve for x
    x = 1,675,154,536.06/53,950.56
  6. Step 6: Final answer
    x = 31,049.81

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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.