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Finding the Fourth Proportional to 88,979.40, 133,469.10 and 71,483.40

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Solution

The fourth proportional to 88,979.40, 133,469.10 and 71,483.40 is: 107,225.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,979.40 : 133,469.10 = 71,483.40 : x
  2. Step 2: Convert to fraction form
    88,979.40/133,469.10 = 71,483.40/x
  3. Step 3: Cross multiply
    88,979.40x = 133,469.10 × 71,483.40
  4. Step 4: Simplify right side
    88,979.40x = 9,540,825,062.94
  5. Step 5: Solve for x
    x = 9,540,825,062.94/88,979.40
  6. Step 6: Final answer
    x = 107,225.10

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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.