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Finding the Fourth Proportional to 96,686.44, 133,124.08 and 87,829.04

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Solution

The fourth proportional to 96,686.44, 133,124.08 and 87,829.04 is: 120,928.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,686.44 : 133,124.08 = 87,829.04 : x
  2. Step 2: Convert to fraction form
    96,686.44/133,124.08 = 87,829.04/x
  3. Step 3: Cross multiply
    96,686.44x = 133,124.08 × 87,829.04
  4. Step 4: Simplify right side
    96,686.44x = 11,692,160,147.28
  5. Step 5: Solve for x
    x = 11,692,160,147.28/96,686.44
  6. Step 6: Final answer
    x = 120,928.64

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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.