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Finding the Fourth Proportional to 161,553.60, 242,589.60 and 109,195.20

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Solution

The fourth proportional to 161,553.60, 242,589.60 and 109,195.20 is: 163,968.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,553.60 : 242,589.60 = 109,195.20 : x
  2. Step 2: Convert to fraction form
    161,553.60/242,589.60 = 109,195.20/x
  3. Step 3: Cross multiply
    161,553.60x = 242,589.60 × 109,195.20
  4. Step 4: Simplify right side
    161,553.60x = 26,489,619,889.92
  5. Step 5: Solve for x
    x = 26,489,619,889.92/161,553.60
  6. Step 6: Final answer
    x = 163,968.00

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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.