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Finding the Fourth Proportional to 158,480.40, 237,720.60 and 47,672.40

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Solution

The fourth proportional to 158,480.40, 237,720.60 and 47,672.40 is: 71,508.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,480.40 : 237,720.60 = 47,672.40 : x
  2. Step 2: Convert to fraction form
    158,480.40/237,720.60 = 47,672.40/x
  3. Step 3: Cross multiply
    158,480.40x = 237,720.60 × 47,672.40
  4. Step 4: Simplify right side
    158,480.40x = 11,332,711,531.44
  5. Step 5: Solve for x
    x = 11,332,711,531.44/158,480.40
  6. Step 6: Final answer
    x = 71,508.60

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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.