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Finding the Fourth Proportional to 56,968.31, 85,452.47 and 15,415.31

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Solution

The fourth proportional to 56,968.31, 85,452.47 and 15,415.31 is: 23,122.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,968.31 : 85,452.47 = 15,415.31 : x
  2. Step 2: Convert to fraction form
    56,968.31/85,452.47 = 15,415.31/x
  3. Step 3: Cross multiply
    56,968.31x = 85,452.47 × 15,415.31
  4. Step 4: Simplify right side
    56,968.31x = 1,317,276,509.68
  5. Step 5: Solve for x
    x = 1,317,276,509.68/56,968.31
  6. Step 6: Final answer
    x = 23,122.97

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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.