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Finding the Fourth Proportional to 499,211.39, 688,960.10 and 295,327.86

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Solution

The fourth proportional to 499,211.39, 688,960.10 and 295,327.86 is: 407,581.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,211.39 : 688,960.10 = 295,327.86 : x
  2. Step 2: Convert to fraction form
    499,211.39/688,960.10 = 295,327.86/x
  3. Step 3: Cross multiply
    499,211.39x = 688,960.10 × 295,327.86
  4. Step 4: Simplify right side
    499,211.39x = 203,469,111,958.39
  5. Step 5: Solve for x
    x = 203,469,111,958.39/499,211.39
  6. Step 6: Final answer
    x = 407,581.07

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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.