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Finding the Fourth Proportional to 161,662.24, 242,493.80 and 56,481.20

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Solution

The fourth proportional to 161,662.24, 242,493.80 and 56,481.20 is: 84,721.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,662.24 : 242,493.80 = 56,481.20 : x
  2. Step 2: Convert to fraction form
    161,662.24/242,493.80 = 56,481.20/x
  3. Step 3: Cross multiply
    161,662.24x = 242,493.80 × 56,481.20
  4. Step 4: Simplify right side
    161,662.24x = 13,696,340,816.56
  5. Step 5: Solve for x
    x = 13,696,340,816.56/161,662.24
  6. Step 6: Final answer
    x = 84,721.95

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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.