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Finding the Fourth Proportional to 441,530.28, 665,245.53 and 399,463.74

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Solution

The fourth proportional to 441,530.28, 665,245.53 and 399,463.74 is: 601,864.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    441,530.28 : 665,245.53 = 399,463.74 : x
  2. Step 2: Convert to fraction form
    441,530.28/665,245.53 = 399,463.74/x
  3. Step 3: Cross multiply
    441,530.28x = 665,245.53 × 399,463.74
  4. Step 4: Simplify right side
    441,530.28x = 265,741,467,432.08
  5. Step 5: Solve for x
    x = 265,741,467,432.08/441,530.28
  6. Step 6: Final answer
    x = 601,864.65

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.