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Finding the Fourth Proportional to 573,039.77, 859,588.20 and 218,081.30

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Solution

The fourth proportional to 573,039.77, 859,588.20 and 218,081.30 is: 327,132.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,039.77 : 859,588.20 = 218,081.30 : x
  2. Step 2: Convert to fraction form
    573,039.77/859,588.20 = 218,081.30/x
  3. Step 3: Cross multiply
    573,039.77x = 859,588.20 × 218,081.30
  4. Step 4: Simplify right side
    573,039.77x = 187,460,107,822.72
  5. Step 5: Solve for x
    x = 187,460,107,822.72/573,039.77
  6. Step 6: Final answer
    x = 327,132.81

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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.