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Finding the Fourth Proportional to 493,074.20, 739,611.30 and 315,927.20

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Solution

The fourth proportional to 493,074.20, 739,611.30 and 315,927.20 is: 473,890.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,074.20 : 739,611.30 = 315,927.20 : x
  2. Step 2: Convert to fraction form
    493,074.20/739,611.30 = 315,927.20/x
  3. Step 3: Cross multiply
    493,074.20x = 739,611.30 × 315,927.20
  4. Step 4: Simplify right side
    493,074.20x = 233,663,327,097.36
  5. Step 5: Solve for x
    x = 233,663,327,097.36/493,074.20
  6. Step 6: Final answer
    x = 473,890.80

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Similar ratio
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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.