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Finding the Fourth Proportional to 64,415.54, 96,578.04 and 28,374.90

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Solution

The fourth proportional to 64,415.54, 96,578.04 and 28,374.90 is: 42,542.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,415.54 : 96,578.04 = 28,374.90 : x
  2. Step 2: Convert to fraction form
    64,415.54/96,578.04 = 28,374.90/x
  3. Step 3: Cross multiply
    64,415.54x = 96,578.04 × 28,374.90
  4. Step 4: Simplify right side
    64,415.54x = 2,740,392,227.20
  5. Step 5: Solve for x
    x = 2,740,392,227.20/64,415.54
  6. Step 6: Final answer
    x = 42,542.41

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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.