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Finding the Fourth Proportional to 60,578.42, 90,871.26 and 19,025.42

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Solution

The fourth proportional to 60,578.42, 90,871.26 and 19,025.42 is: 28,539.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,578.42 : 90,871.26 = 19,025.42 : x
  2. Step 2: Convert to fraction form
    60,578.42/90,871.26 = 19,025.42/x
  3. Step 3: Cross multiply
    60,578.42x = 90,871.26 × 19,025.42
  4. Step 4: Simplify right side
    60,578.42x = 1,728,863,887.43
  5. Step 5: Solve for x
    x = 1,728,863,887.43/60,578.42
  6. Step 6: Final answer
    x = 28,539.27

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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.