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Finding the Fourth Proportional to 64,137.78, 96,209.90 and 19,794.86

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Solution

The fourth proportional to 64,137.78, 96,209.90 and 19,794.86 is: 29,693.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,137.78 : 96,209.90 = 19,794.86 : x
  2. Step 2: Convert to fraction form
    64,137.78/96,209.90 = 19,794.86/x
  3. Step 3: Cross multiply
    64,137.78x = 96,209.90 × 19,794.86
  4. Step 4: Simplify right side
    64,137.78x = 1,904,461,501.11
  5. Step 5: Solve for x
    x = 1,904,461,501.11/64,137.78
  6. Step 6: Final answer
    x = 29,693.29

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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.