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Finding the Fourth Proportional to 118,041.40, 177,072.90 and 47,906.20

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Solution

The fourth proportional to 118,041.40, 177,072.90 and 47,906.20 is: 71,863.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,041.40 : 177,072.90 = 47,906.20 : x
  2. Step 2: Convert to fraction form
    118,041.40/177,072.90 = 47,906.20/x
  3. Step 3: Cross multiply
    118,041.40x = 177,072.90 × 47,906.20
  4. Step 4: Simplify right side
    118,041.40x = 8,482,889,761.98
  5. Step 5: Solve for x
    x = 8,482,889,761.98/118,041.40
  6. Step 6: Final answer
    x = 71,863.68

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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.