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Finding the Fourth Proportional to 104,141.05, 143,714.41 and 56,394.79

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Solution

The fourth proportional to 104,141.05, 143,714.41 and 56,394.79 is: 77,824.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,141.05 : 143,714.41 = 56,394.79 : x
  2. Step 2: Convert to fraction form
    104,141.05/143,714.41 = 56,394.79/x
  3. Step 3: Cross multiply
    104,141.05x = 143,714.41 × 56,394.79
  4. Step 4: Simplify right side
    104,141.05x = 8,104,743,471.65
  5. Step 5: Solve for x
    x = 8,104,743,471.65/104,141.05
  6. Step 6: Final answer
    x = 77,824.68

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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.