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Finding the Fourth Proportional to 401,072.80, 601,609.20 and 164,585.20

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Solution

The fourth proportional to 401,072.80, 601,609.20 and 164,585.20 is: 246,877.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,072.80 : 601,609.20 = 164,585.20 : x
  2. Step 2: Convert to fraction form
    401,072.80/601,609.20 = 164,585.20/x
  3. Step 3: Cross multiply
    401,072.80x = 601,609.20 × 164,585.20
  4. Step 4: Simplify right side
    401,072.80x = 99,015,970,503.84
  5. Step 5: Solve for x
    x = 99,015,970,503.84/401,072.80
  6. Step 6: Final answer
    x = 246,877.80

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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.