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Finding the Fourth Proportional to 118,480.14, 177,721.02 and 47,408.76

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Solution

The fourth proportional to 118,480.14, 177,721.02 and 47,408.76 is: 71,113.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,480.14 : 177,721.02 = 47,408.76 : x
  2. Step 2: Convert to fraction form
    118,480.14/177,721.02 = 47,408.76/x
  3. Step 3: Cross multiply
    118,480.14x = 177,721.02 × 47,408.76
  4. Step 4: Simplify right side
    118,480.14x = 8,425,533,184.14
  5. Step 5: Solve for x
    x = 8,425,533,184.14/118,480.14
  6. Step 6: Final answer
    x = 71,113.46

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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.