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Finding the Fourth Proportional to 386,089.68, 579,792.24 and 251,383.20

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Solution

The fourth proportional to 386,089.68, 579,792.24 and 251,383.20 is: 377,503.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,089.68 : 579,792.24 = 251,383.20 : x
  2. Step 2: Convert to fraction form
    386,089.68/579,792.24 = 251,383.20/x
  3. Step 3: Cross multiply
    386,089.68x = 579,792.24 × 251,383.20
  4. Step 4: Simplify right side
    386,089.68x = 145,750,028,626.37
  5. Step 5: Solve for x
    x = 145,750,028,626.37/386,089.68
  6. Step 6: Final answer
    x = 377,503.04

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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.