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Finding the Fourth Proportional to 355,604.40, 533,233.80 and 197,665.20

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Solution

The fourth proportional to 355,604.40, 533,233.80 and 197,665.20 is: 296,401.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,604.40 : 533,233.80 = 197,665.20 : x
  2. Step 2: Convert to fraction form
    355,604.40/533,233.80 = 197,665.20/x
  3. Step 3: Cross multiply
    355,604.40x = 533,233.80 × 197,665.20
  4. Step 4: Simplify right side
    355,604.40x = 105,401,765,723.76
  5. Step 5: Solve for x
    x = 105,401,765,723.76/355,604.40
  6. Step 6: Final answer
    x = 296,401.75

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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.