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Finding the Fourth Proportional to 166,978.20, 230,428.58 and 91,526.52

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Solution

The fourth proportional to 166,978.20, 230,428.58 and 91,526.52 is: 126,305.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,978.20 : 230,428.58 = 91,526.52 : x
  2. Step 2: Convert to fraction form
    166,978.20/230,428.58 = 91,526.52/x
  3. Step 3: Cross multiply
    166,978.20x = 230,428.58 × 91,526.52
  4. Step 4: Simplify right side
    166,978.20x = 21,090,326,035.94
  5. Step 5: Solve for x
    x = 21,090,326,035.94/166,978.20
  6. Step 6: Final answer
    x = 126,305.87

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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.