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Finding the Fourth Proportional to 357,487.30, 493,335.39 and 196,344.28

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Solution

The fourth proportional to 357,487.30, 493,335.39 and 196,344.28 is: 270,956.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,487.30 : 493,335.39 = 196,344.28 : x
  2. Step 2: Convert to fraction form
    357,487.30/493,335.39 = 196,344.28/x
  3. Step 3: Cross multiply
    357,487.30x = 493,335.39 × 196,344.28
  4. Step 4: Simplify right side
    357,487.30x = 96,863,581,948.07
  5. Step 5: Solve for x
    x = 96,863,581,948.07/357,487.30
  6. Step 6: Final answer
    x = 270,956.71

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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.