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Finding the Fourth Proportional to 404,620.40, 606,671.40 and 168,057.20

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Solution

The fourth proportional to 404,620.40, 606,671.40 and 168,057.20 is: 251,978.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,620.40 : 606,671.40 = 168,057.20 : x
  2. Step 2: Convert to fraction form
    404,620.40/606,671.40 = 168,057.20/x
  3. Step 3: Cross multiply
    404,620.40x = 606,671.40 × 168,057.20
  4. Step 4: Simplify right side
    404,620.40x = 101,955,496,804.08
  5. Step 5: Solve for x
    x = 101,955,496,804.08/404,620.40
  6. Step 6: Final answer
    x = 251,978.14

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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.