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Finding the Fourth Proportional to 404,661.80, 607,065.60 and 168,028.40

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Solution

The fourth proportional to 404,661.80, 607,065.60 and 168,028.40 is: 252,072.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,661.80 : 607,065.60 = 168,028.40 : x
  2. Step 2: Convert to fraction form
    404,661.80/607,065.60 = 168,028.40/x
  3. Step 3: Cross multiply
    404,661.80x = 607,065.60 × 168,028.40
  4. Step 4: Simplify right side
    404,661.80x = 102,004,261,463.04
  5. Step 5: Solve for x
    x = 102,004,261,463.04/404,661.80
  6. Step 6: Final answer
    x = 252,072.87

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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.