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Finding the Fourth Proportional to 539,286.63, 808,300.17 and 405,737.88

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Solution

The fourth proportional to 539,286.63, 808,300.17 and 405,737.88 is: 608,133.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,286.63 : 808,300.17 = 405,737.88 : x
  2. Step 2: Convert to fraction form
    539,286.63/808,300.17 = 405,737.88/x
  3. Step 3: Cross multiply
    539,286.63x = 808,300.17 × 405,737.88
  4. Step 4: Simplify right side
    539,286.63x = 327,957,997,379.44
  5. Step 5: Solve for x
    x = 327,957,997,379.44/539,286.63
  6. Step 6: Final answer
    x = 608,133.00

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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.