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Finding the Fourth Proportional to 64,470.15, 96,700.77 and 20,092.68

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Solution

The fourth proportional to 64,470.15, 96,700.77 and 20,092.68 is: 30,137.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,470.15 : 96,700.77 = 20,092.68 : x
  2. Step 2: Convert to fraction form
    64,470.15/96,700.77 = 20,092.68/x
  3. Step 3: Cross multiply
    64,470.15x = 96,700.77 × 20,092.68
  4. Step 4: Simplify right side
    64,470.15x = 1,942,977,627.36
  5. Step 5: Solve for x
    x = 1,942,977,627.36/64,470.15
  6. Step 6: Final answer
    x = 30,137.63

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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.