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Finding the Fourth Proportional to 117,805.20, 176,592.60 and 47,590.80

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Solution

The fourth proportional to 117,805.20, 176,592.60 and 47,590.80 is: 71,339.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,805.20 : 176,592.60 = 47,590.80 : x
  2. Step 2: Convert to fraction form
    117,805.20/176,592.60 = 47,590.80/x
  3. Step 3: Cross multiply
    117,805.20x = 176,592.60 × 47,590.80
  4. Step 4: Simplify right side
    117,805.20x = 8,404,183,108.08
  5. Step 5: Solve for x
    x = 8,404,183,108.08/117,805.20
  6. Step 6: Final answer
    x = 71,339.66

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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.