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Finding the Fourth Proportional to 104,678.52, 156,819.99 and 61,856.21

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Solution

The fourth proportional to 104,678.52, 156,819.99 and 61,856.21 is: 92,667.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,678.52 : 156,819.99 = 61,856.21 : x
  2. Step 2: Convert to fraction form
    104,678.52/156,819.99 = 61,856.21/x
  3. Step 3: Cross multiply
    104,678.52x = 156,819.99 × 61,856.21
  4. Step 4: Simplify right side
    104,678.52x = 9,700,290,233.64
  5. Step 5: Solve for x
    x = 9,700,290,233.64/104,678.52
  6. Step 6: Final answer
    x = 92,667.44

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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.