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Finding the Fourth Proportional to 133,258.97, 183,879.66 and 85,576.90

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Solution

The fourth proportional to 133,258.97, 183,879.66 and 85,576.90 is: 118,084.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,258.97 : 183,879.66 = 85,576.90 : x
  2. Step 2: Convert to fraction form
    133,258.97/183,879.66 = 85,576.90/x
  3. Step 3: Cross multiply
    133,258.97x = 183,879.66 × 85,576.90
  4. Step 4: Simplify right side
    133,258.97x = 15,735,851,275.85
  5. Step 5: Solve for x
    x = 15,735,851,275.85/133,258.97
  6. Step 6: Final answer
    x = 118,084.74

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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.