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Finding the Fourth Proportional to 404,663.40, 607,238.10 and 167,981.40

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Solution

The fourth proportional to 404,663.40, 607,238.10 and 167,981.40 is: 252,072.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,663.40 : 607,238.10 = 167,981.40 : x
  2. Step 2: Convert to fraction form
    404,663.40/607,238.10 = 167,981.40/x
  3. Step 3: Cross multiply
    404,663.40x = 607,238.10 × 167,981.40
  4. Step 4: Simplify right side
    404,663.40x = 102,004,706,171.34
  5. Step 5: Solve for x
    x = 102,004,706,171.34/404,663.40
  6. Step 6: Final answer
    x = 252,072.97

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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.