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Finding the Fourth Proportional to 96,900.66, 145,324.44 and 61,308.45

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Solution

The fourth proportional to 96,900.66, 145,324.44 and 61,308.45 is: 91,945.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,900.66 : 145,324.44 = 61,308.45 : x
  2. Step 2: Convert to fraction form
    96,900.66/145,324.44 = 61,308.45/x
  3. Step 3: Cross multiply
    96,900.66x = 145,324.44 × 61,308.45
  4. Step 4: Simplify right side
    96,900.66x = 8,909,616,163.52
  5. Step 5: Solve for x
    x = 8,909,616,163.52/96,900.66
  6. Step 6: Final answer
    x = 91,945.88

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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.