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Finding the Fourth Proportional to 303,663.21, 455,771.16 and 161,627.69

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Solution

The fourth proportional to 303,663.21, 455,771.16 and 161,627.69 is: 242,588.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,663.21 : 455,771.16 = 161,627.69 : x
  2. Step 2: Convert to fraction form
    303,663.21/455,771.16 = 161,627.69/x
  3. Step 3: Cross multiply
    303,663.21x = 455,771.16 × 161,627.69
  4. Step 4: Simplify right side
    303,663.21x = 73,665,239,759.42
  5. Step 5: Solve for x
    x = 73,665,239,759.42/303,663.21
  6. Step 6: Final answer
    x = 242,588.62

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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.