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Finding the Fourth Proportional to 119,715.91, 179,452.66 and 77,622.64

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Solution

The fourth proportional to 119,715.91, 179,452.66 and 77,622.64 is: 116,355.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,715.91 : 179,452.66 = 77,622.64 : x
  2. Step 2: Convert to fraction form
    119,715.91/179,452.66 = 77,622.64/x
  3. Step 3: Cross multiply
    119,715.91x = 179,452.66 × 77,622.64
  4. Step 4: Simplify right side
    119,715.91x = 13,929,589,224.22
  5. Step 5: Solve for x
    x = 13,929,589,224.22/119,715.91
  6. Step 6: Final answer
    x = 116,355.37

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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.