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Finding the Fourth Proportional to 117,536.80, 176,420.40 and 58,439.20

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Solution

The fourth proportional to 117,536.80, 176,420.40 and 58,439.20 is: 87,716.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,536.80 : 176,420.40 = 58,439.20 : x
  2. Step 2: Convert to fraction form
    117,536.80/176,420.40 = 58,439.20/x
  3. Step 3: Cross multiply
    117,536.80x = 176,420.40 × 58,439.20
  4. Step 4: Simplify right side
    117,536.80x = 10,309,867,039.68
  5. Step 5: Solve for x
    x = 10,309,867,039.68/117,536.80
  6. Step 6: Final answer
    x = 87,716.08

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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.