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Finding the Fourth Proportional to 52,579.48, 78,743.48 and 30,325.39

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Solution

The fourth proportional to 52,579.48, 78,743.48 and 30,325.39 is: 45,415.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,579.48 : 78,743.48 = 30,325.39 : x
  2. Step 2: Convert to fraction form
    52,579.48/78,743.48 = 30,325.39/x
  3. Step 3: Cross multiply
    52,579.48x = 78,743.48 × 30,325.39
  4. Step 4: Simplify right side
    52,579.48x = 2,387,926,472.27
  5. Step 5: Solve for x
    x = 2,387,926,472.27/52,579.48
  6. Step 6: Final answer
    x = 45,415.56

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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.