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Finding the Fourth Proportional to 404,824.80, 607,237.20 and 399,295.20

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Solution

The fourth proportional to 404,824.80, 607,237.20 and 399,295.20 is: 598,942.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,824.80 : 607,237.20 = 399,295.20 : x
  2. Step 2: Convert to fraction form
    404,824.80/607,237.20 = 399,295.20/x
  3. Step 3: Cross multiply
    404,824.80x = 607,237.20 × 399,295.20
  4. Step 4: Simplify right side
    404,824.80x = 242,466,899,221.44
  5. Step 5: Solve for x
    x = 242,466,899,221.44/404,824.80
  6. Step 6: Final answer
    x = 598,942.80

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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.