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Finding the Fourth Proportional to 479,415.30, 718,624.80 and 194,983.80

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Solution

The fourth proportional to 479,415.30, 718,624.80 and 194,983.80 is: 292,273.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,415.30 : 718,624.80 = 194,983.80 : x
  2. Step 2: Convert to fraction form
    479,415.30/718,624.80 = 194,983.80/x
  3. Step 3: Cross multiply
    479,415.30x = 718,624.80 × 194,983.80
  4. Step 4: Simplify right side
    479,415.30x = 140,120,194,278.24
  5. Step 5: Solve for x
    x = 140,120,194,278.24/479,415.30
  6. Step 6: Final answer
    x = 292,273.10

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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.