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Finding the Fourth Proportional to 52,969.44, 79,428.48 and 30,789.20

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Solution

The fourth proportional to 52,969.44, 79,428.48 and 30,789.20 is: 46,168.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,969.44 : 79,428.48 = 30,789.20 : x
  2. Step 2: Convert to fraction form
    52,969.44/79,428.48 = 30,789.20/x
  3. Step 3: Cross multiply
    52,969.44x = 79,428.48 × 30,789.20
  4. Step 4: Simplify right side
    52,969.44x = 2,445,539,356.42
  5. Step 5: Solve for x
    x = 2,445,539,356.42/52,969.44
  6. Step 6: Final answer
    x = 46,168.87

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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.