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Finding the Fourth Proportional to 46,808.40, 70,162.92 and 21,819.36

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Solution

The fourth proportional to 46,808.40, 70,162.92 and 21,819.36 is: 32,705.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    46,808.40 : 70,162.92 = 21,819.36 : x
  2. Step 2: Convert to fraction form
    46,808.40/70,162.92 = 21,819.36/x
  3. Step 3: Cross multiply
    46,808.40x = 70,162.92 × 21,819.36
  4. Step 4: Simplify right side
    46,808.40x = 1,530,910,010.13
  5. Step 5: Solve for x
    x = 1,530,910,010.13/46,808.40
  6. Step 6: Final answer
    x = 32,705.88

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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.