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Finding the Fourth Proportional to 467,640.55, 645,343.68 and 252,780.62

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Solution

The fourth proportional to 467,640.55, 645,343.68 and 252,780.62 is: 348,837.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    467,640.55 : 645,343.68 = 252,780.62 : x
  2. Step 2: Convert to fraction form
    467,640.55/645,343.68 = 252,780.62/x
  3. Step 3: Cross multiply
    467,640.55x = 645,343.68 × 252,780.62
  4. Step 4: Simplify right side
    467,640.55x = 163,130,372,553.75
  5. Step 5: Solve for x
    x = 163,130,372,553.75/467,640.55
  6. Step 6: Final answer
    x = 348,837.10

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.