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Finding the Fourth Proportional to 357,911.60, 535,699.17 and 263,116.69

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Solution

The fourth proportional to 357,911.60, 535,699.17 and 263,116.69 is: 393,816.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,911.60 : 535,699.17 = 263,116.69 : x
  2. Step 2: Convert to fraction form
    357,911.60/535,699.17 = 263,116.69/x
  3. Step 3: Cross multiply
    357,911.60x = 535,699.17 × 263,116.69
  4. Step 4: Simplify right side
    357,911.60x = 140,951,392,446.15
  5. Step 5: Solve for x
    x = 140,951,392,446.15/357,911.60
  6. Step 6: Final answer
    x = 393,816.22

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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.