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Finding the Fourth Proportional to 126,511.99, 189,614.54 and 92,920.58

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Solution

The fourth proportional to 126,511.99, 189,614.54 and 92,920.58 is: 139,268.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,511.99 : 189,614.54 = 92,920.58 : x
  2. Step 2: Convert to fraction form
    126,511.99/189,614.54 = 92,920.58/x
  3. Step 3: Cross multiply
    126,511.99x = 189,614.54 × 92,920.58
  4. Step 4: Simplify right side
    126,511.99x = 17,619,093,572.42
  5. Step 5: Solve for x
    x = 17,619,093,572.42/126,511.99
  6. Step 6: Final answer
    x = 139,268.17

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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.