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Finding the Fourth Proportional to 64,819.88, 89,451.48 and 35,011.88

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Solution

The fourth proportional to 64,819.88, 89,451.48 and 35,011.88 is: 48,316.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,819.88 : 89,451.48 = 35,011.88 : x
  2. Step 2: Convert to fraction form
    64,819.88/89,451.48 = 35,011.88/x
  3. Step 3: Cross multiply
    64,819.88x = 89,451.48 × 35,011.88
  4. Step 4: Simplify right side
    64,819.88x = 3,131,864,483.58
  5. Step 5: Solve for x
    x = 3,131,864,483.58/64,819.88
  6. Step 6: Final answer
    x = 48,316.42

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.