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Finding the Fourth Proportional to 119,910.80, 165,488.68 and 69,606.80

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Solution

The fourth proportional to 119,910.80, 165,488.68 and 69,606.80 is: 96,064.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,910.80 : 165,488.68 = 69,606.80 : x
  2. Step 2: Convert to fraction form
    119,910.80/165,488.68 = 69,606.80/x
  3. Step 3: Cross multiply
    119,910.80x = 165,488.68 × 69,606.80
  4. Step 4: Simplify right side
    119,910.80x = 11,519,137,451.02
  5. Step 5: Solve for x
    x = 11,519,137,451.02/119,910.80
  6. Step 6: Final answer
    x = 96,064.22

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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.