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Finding the Fourth Proportional to 104,636.92, 144,399.30 and 56,890.12

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Solution

The fourth proportional to 104,636.92, 144,399.30 and 56,890.12 is: 78,508.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,636.92 : 144,399.30 = 56,890.12 : x
  2. Step 2: Convert to fraction form
    104,636.92/144,399.30 = 56,890.12/x
  3. Step 3: Cross multiply
    104,636.92x = 144,399.30 × 56,890.12
  4. Step 4: Simplify right side
    104,636.92x = 8,214,893,504.92
  5. Step 5: Solve for x
    x = 8,214,893,504.92/104,636.92
  6. Step 6: Final answer
    x = 78,508.56

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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.