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Finding the Fourth Proportional to 64,721.81, 96,874.95 and 34,694.30

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Solution

The fourth proportional to 64,721.81, 96,874.95 and 34,694.30 is: 51,930.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,721.81 : 96,874.95 = 34,694.30 : x
  2. Step 2: Convert to fraction form
    64,721.81/96,874.95 = 34,694.30/x
  3. Step 3: Cross multiply
    64,721.81x = 96,874.95 × 34,694.30
  4. Step 4: Simplify right side
    64,721.81x = 3,361,008,577.79
  5. Step 5: Solve for x
    x = 3,361,008,577.79/64,721.81
  6. Step 6: Final answer
    x = 51,930.08

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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.