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Finding the Fourth Proportional to 543,559.06, 749,990.64 and 328,694.68

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Solution

The fourth proportional to 543,559.06, 749,990.64 and 328,694.68 is: 453,525.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,559.06 : 749,990.64 = 328,694.68 : x
  2. Step 2: Convert to fraction form
    543,559.06/749,990.64 = 328,694.68/x
  3. Step 3: Cross multiply
    543,559.06x = 749,990.64 × 328,694.68
  4. Step 4: Simplify right side
    543,559.06x = 246,517,933,417.80
  5. Step 5: Solve for x
    x = 246,517,933,417.80/543,559.06
  6. Step 6: Final answer
    x = 453,525.57

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.