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Finding the Fourth Proportional to 389,598.61, 584,757.12 and 197,607.79

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Solution

The fourth proportional to 389,598.61, 584,757.12 and 197,607.79 is: 296,593.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,598.61 : 584,757.12 = 197,607.79 : x
  2. Step 2: Convert to fraction form
    389,598.61/584,757.12 = 197,607.79/x
  3. Step 3: Cross multiply
    389,598.61x = 584,757.12 × 197,607.79
  4. Step 4: Simplify right side
    389,598.61x = 115,552,562,169.97
  5. Step 5: Solve for x
    x = 115,552,562,169.97/389,598.61
  6. Step 6: Final answer
    x = 296,593.88

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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.