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Finding the Fourth Proportional to 303,663.72, 455,771.92 and 161,628.18

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Solution

The fourth proportional to 303,663.72, 455,771.92 and 161,628.18 is: 242,589.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,663.72 : 455,771.92 = 161,628.18 : x
  2. Step 2: Convert to fraction form
    303,663.72/455,771.92 = 161,628.18/x
  3. Step 3: Cross multiply
    303,663.72x = 455,771.92 × 161,628.18
  4. Step 4: Simplify right side
    303,663.72x = 73,665,585,924.71
  5. Step 5: Solve for x
    x = 73,665,585,924.71/303,663.72
  6. Step 6: Final answer
    x = 242,589.35

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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.