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Finding the Fourth Proportional to 479,213.80, 718,820.70 and 146,789.80

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Solution

The fourth proportional to 479,213.80, 718,820.70 and 146,789.80 is: 220,184.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,213.80 : 718,820.70 = 146,789.80 : x
  2. Step 2: Convert to fraction form
    479,213.80/718,820.70 = 146,789.80/x
  3. Step 3: Cross multiply
    479,213.80x = 718,820.70 × 146,789.80
  4. Step 4: Simplify right side
    479,213.80x = 105,515,546,788.86
  5. Step 5: Solve for x
    x = 105,515,546,788.86/479,213.80
  6. Step 6: Final answer
    x = 220,184.70

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1.5x scale

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.