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Finding the Fourth Proportional to 369,171.58, 509,456.78 and 199,405.71

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Solution

The fourth proportional to 369,171.58, 509,456.78 and 199,405.71 is: 275,179.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,171.58 : 509,456.78 = 199,405.71 : x
  2. Step 2: Convert to fraction form
    369,171.58/509,456.78 = 199,405.71/x
  3. Step 3: Cross multiply
    369,171.58x = 509,456.78 × 199,405.71
  4. Step 4: Simplify right side
    369,171.58x = 101,588,588,523.99
  5. Step 5: Solve for x
    x = 101,588,588,523.99/369,171.58
  6. Step 6: Final answer
    x = 275,179.87

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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.