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Finding the Fourth Proportional to 71,956.41, 107,924.89 and 19,369.05

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Solution

The fourth proportional to 71,956.41, 107,924.89 and 19,369.05 is: 29,050.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,956.41 : 107,924.89 = 19,369.05 : x
  2. Step 2: Convert to fraction form
    71,956.41/107,924.89 = 19,369.05/x
  3. Step 3: Cross multiply
    71,956.41x = 107,924.89 × 19,369.05
  4. Step 4: Simplify right side
    71,956.41x = 2,090,402,590.65
  5. Step 5: Solve for x
    x = 2,090,402,590.65/71,956.41
  6. Step 6: Final answer
    x = 29,050.96

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.