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Finding the Fourth Proportional to 405,781.71, 608,276.97 and 169,192.05

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Solution

The fourth proportional to 405,781.71, 608,276.97 and 169,192.05 is: 253,623.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,781.71 : 608,276.97 = 169,192.05 : x
  2. Step 2: Convert to fraction form
    405,781.71/608,276.97 = 169,192.05/x
  3. Step 3: Cross multiply
    405,781.71x = 608,276.97 × 169,192.05
  4. Step 4: Simplify right side
    405,781.71x = 102,915,627,522.09
  5. Step 5: Solve for x
    x = 102,915,627,522.09/405,781.71
  6. Step 6: Final answer
    x = 253,623.13

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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.