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Finding the Fourth Proportional to 104,788.92, 144,604.19 and 57,042.19

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Solution

The fourth proportional to 104,788.92, 144,604.19 and 57,042.19 is: 78,715.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,788.92 : 144,604.19 = 57,042.19 : x
  2. Step 2: Convert to fraction form
    104,788.92/144,604.19 = 57,042.19/x
  3. Step 3: Cross multiply
    104,788.92x = 144,604.19 × 57,042.19
  4. Step 4: Simplify right side
    104,788.92x = 8,248,539,461.87
  5. Step 5: Solve for x
    x = 8,248,539,461.87/104,788.92
  6. Step 6: Final answer
    x = 78,715.76

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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.