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Finding the Fourth Proportional to 71,814.65, 99,119.24 and 43,135.56

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Solution

The fourth proportional to 71,814.65, 99,119.24 and 43,135.56 is: 59,536.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,814.65 : 99,119.24 = 43,135.56 : x
  2. Step 2: Convert to fraction form
    71,814.65/99,119.24 = 43,135.56/x
  3. Step 3: Cross multiply
    71,814.65x = 99,119.24 × 43,135.56
  4. Step 4: Simplify right side
    71,814.65x = 4,275,563,708.50
  5. Step 5: Solve for x
    x = 4,275,563,708.50/71,814.65
  6. Step 6: Final answer
    x = 59,536.10

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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.