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Finding the Fourth Proportional to 14,779.68, 22,161.29 and 4,916.31

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Solution

The fourth proportional to 14,779.68, 22,161.29 and 4,916.31 is: 7,371.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,779.68 : 22,161.29 = 4,916.31 : x
  2. Step 2: Convert to fraction form
    14,779.68/22,161.29 = 4,916.31/x
  3. Step 3: Cross multiply
    14,779.68x = 22,161.29 × 4,916.31
  4. Step 4: Simplify right side
    14,779.68x = 108,951,747.06
  5. Step 5: Solve for x
    x = 108,951,747.06/14,779.68
  6. Step 6: Final answer
    x = 7,371.73

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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.