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Finding the Fourth Proportional to 117,644.20, 176,063.10 and 70,930.60

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Solution

The fourth proportional to 117,644.20, 176,063.10 and 70,930.60 is: 106,152.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,644.20 : 176,063.10 = 70,930.60 : x
  2. Step 2: Convert to fraction form
    117,644.20/176,063.10 = 70,930.60/x
  3. Step 3: Cross multiply
    117,644.20x = 176,063.10 × 70,930.60
  4. Step 4: Simplify right side
    117,644.20x = 12,488,261,320.86
  5. Step 5: Solve for x
    x = 12,488,261,320.86/117,644.20
  6. Step 6: Final answer
    x = 106,152.80

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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.