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Finding the Fourth Proportional to 10,578.44, 15,869.01 and 3,555.44

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Solution

The fourth proportional to 10,578.44, 15,869.01 and 3,555.44 is: 5,333.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,578.44 : 15,869.01 = 3,555.44 : x
  2. Step 2: Convert to fraction form
    10,578.44/15,869.01 = 3,555.44/x
  3. Step 3: Cross multiply
    10,578.44x = 15,869.01 × 3,555.44
  4. Step 4: Simplify right side
    10,578.44x = 56,421,312.91
  5. Step 5: Solve for x
    x = 56,421,312.91/10,578.44
  6. Step 6: Final answer
    x = 5,333.61

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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.