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Finding the Fourth Proportional to 326,207.40, 488,727.90 and 276,052.20

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Solution

The fourth proportional to 326,207.40, 488,727.90 and 276,052.20 is: 413,584.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,207.40 : 488,727.90 = 276,052.20 : x
  2. Step 2: Convert to fraction form
    326,207.40/488,727.90 = 276,052.20/x
  3. Step 3: Cross multiply
    326,207.40x = 488,727.90 × 276,052.20
  4. Step 4: Simplify right side
    326,207.40x = 134,914,411,996.38
  5. Step 5: Solve for x
    x = 134,914,411,996.38/326,207.40
  6. Step 6: Final answer
    x = 413,584.77

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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.