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Finding the Fourth Proportional to 391,451.46, 540,194.16 and 228,097.86

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Solution

The fourth proportional to 391,451.46, 540,194.16 and 228,097.86 is: 314,769.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,451.46 : 540,194.16 = 228,097.86 : x
  2. Step 2: Convert to fraction form
    391,451.46/540,194.16 = 228,097.86/x
  3. Step 3: Cross multiply
    391,451.46x = 540,194.16 × 228,097.86
  4. Step 4: Simplify right side
    391,451.46x = 123,217,131,880.50
  5. Step 5: Solve for x
    x = 123,217,131,880.50/391,451.46
  6. Step 6: Final answer
    x = 314,769.89

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1.5x scale

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.