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Finding the Fourth Proportional to 537,859.28, 808,165.94 and 405,981.56

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Solution

The fourth proportional to 537,859.28, 808,165.94 and 405,981.56 is: 610,011.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    537,859.28 : 808,165.94 = 405,981.56 : x
  2. Step 2: Convert to fraction form
    537,859.28/808,165.94 = 405,981.56/x
  3. Step 3: Cross multiply
    537,859.28x = 808,165.94 × 405,981.56
  4. Step 4: Simplify right side
    537,859.28x = 328,100,469,050.57
  5. Step 5: Solve for x
    x = 328,100,469,050.57/537,859.28
  6. Step 6: Final answer
    x = 610,011.73

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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.