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Finding the Fourth Proportional to 118,490.40, 177,735.57 and 47,445.03

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Solution

The fourth proportional to 118,490.40, 177,735.57 and 47,445.03 is: 71,167.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,490.40 : 177,735.57 = 47,445.03 : x
  2. Step 2: Convert to fraction form
    118,490.40/177,735.57 = 47,445.03/x
  3. Step 3: Cross multiply
    118,490.40x = 177,735.57 × 47,445.03
  4. Step 4: Simplify right side
    118,490.40x = 8,432,669,450.72
  5. Step 5: Solve for x
    x = 8,432,669,450.72/118,490.40
  6. Step 6: Final answer
    x = 71,167.53

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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.