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Finding the Fourth Proportional to 404,671.80, 607,007.70 and 325,939.80

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Solution

The fourth proportional to 404,671.80, 607,007.70 and 325,939.80 is: 488,909.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,671.80 : 607,007.70 = 325,939.80 : x
  2. Step 2: Convert to fraction form
    404,671.80/607,007.70 = 325,939.80/x
  3. Step 3: Cross multiply
    404,671.80x = 607,007.70 × 325,939.80
  4. Step 4: Simplify right side
    404,671.80x = 197,847,968,336.46
  5. Step 5: Solve for x
    x = 197,847,968,336.46/404,671.80
  6. Step 6: Final answer
    x = 488,909.70

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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.