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Finding the Fourth Proportional to 161,639.28, 242,495.28 and 61,796.88

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Solution

The fourth proportional to 161,639.28, 242,495.28 and 61,796.88 is: 92,709.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,639.28 : 242,495.28 = 61,796.88 : x
  2. Step 2: Convert to fraction form
    161,639.28/242,495.28 = 61,796.88/x
  3. Step 3: Cross multiply
    161,639.28x = 242,495.28 × 61,796.88
  4. Step 4: Simplify right side
    161,639.28x = 14,985,451,718.73
  5. Step 5: Solve for x
    x = 14,985,451,718.73/161,639.28
  6. Step 6: Final answer
    x = 92,709.22

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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.