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Finding the Fourth Proportional to 132,512.15, 198,663.71 and 65,915.98

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Solution

The fourth proportional to 132,512.15, 198,663.71 and 65,915.98 is: 98,821.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,512.15 : 198,663.71 = 65,915.98 : x
  2. Step 2: Convert to fraction form
    132,512.15/198,663.71 = 65,915.98/x
  3. Step 3: Cross multiply
    132,512.15x = 198,663.71 × 65,915.98
  4. Step 4: Simplify right side
    132,512.15x = 13,095,112,308.85
  5. Step 5: Solve for x
    x = 13,095,112,308.85/132,512.15
  6. Step 6: Final answer
    x = 98,821.97

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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.