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Finding the Fourth Proportional to 104,691.51, 144,472.82 and 56,943.77

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Solution

The fourth proportional to 104,691.51, 144,472.82 and 56,943.77 is: 78,581.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,691.51 : 144,472.82 = 56,943.77 : x
  2. Step 2: Convert to fraction form
    104,691.51/144,472.82 = 56,943.77/x
  3. Step 3: Cross multiply
    104,691.51x = 144,472.82 × 56,943.77
  4. Step 4: Simplify right side
    104,691.51x = 8,226,826,026.25
  5. Step 5: Solve for x
    x = 8,226,826,026.25/104,691.51
  6. Step 6: Final answer
    x = 78,581.60

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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.