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Finding the Fourth Proportional to 566,997.60, 782,500.80 and 312,394.56

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Solution

The fourth proportional to 566,997.60, 782,500.80 and 312,394.56 is: 431,128.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    566,997.60 : 782,500.80 = 312,394.56 : x
  2. Step 2: Convert to fraction form
    566,997.60/782,500.80 = 312,394.56/x
  3. Step 3: Cross multiply
    566,997.60x = 782,500.80 × 312,394.56
  4. Step 4: Simplify right side
    566,997.60x = 244,448,993,115.65
  5. Step 5: Solve for x
    x = 244,448,993,115.65/566,997.60
  6. Step 6: Final answer
    x = 431,128.80

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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.