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Finding the Fourth Proportional to 51,399.66, 77,169.42 and 28,926.22

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Solution

The fourth proportional to 51,399.66, 77,169.42 and 28,926.22 is: 43,428.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,399.66 : 77,169.42 = 28,926.22 : x
  2. Step 2: Convert to fraction form
    51,399.66/77,169.42 = 28,926.22/x
  3. Step 3: Cross multiply
    51,399.66x = 77,169.42 × 28,926.22
  4. Step 4: Simplify right side
    51,399.66x = 2,232,219,620.19
  5. Step 5: Solve for x
    x = 2,232,219,620.19/51,399.66
  6. Step 6: Final answer
    x = 43,428.68

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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.