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Finding the Fourth Proportional to 536,018.43, 808,891.07 and 518,172.51

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Solution

The fourth proportional to 536,018.43, 808,891.07 and 518,172.51 is: 781,960.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    536,018.43 : 808,891.07 = 518,172.51 : x
  2. Step 2: Convert to fraction form
    536,018.43/808,891.07 = 518,172.51/x
  3. Step 3: Cross multiply
    536,018.43x = 808,891.07 × 518,172.51
  4. Step 4: Simplify right side
    536,018.43x = 419,145,117,353.92
  5. Step 5: Solve for x
    x = 419,145,117,353.92/536,018.43
  6. Step 6: Final answer
    x = 781,960.27

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.