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Finding the Fourth Proportional to 118,037.16, 177,129.36 and 47,916.45

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Solution

The fourth proportional to 118,037.16, 177,129.36 and 47,916.45 is: 71,904.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,037.16 : 177,129.36 = 47,916.45 : x
  2. Step 2: Convert to fraction form
    118,037.16/177,129.36 = 47,916.45/x
  3. Step 3: Cross multiply
    118,037.16x = 177,129.36 × 47,916.45
  4. Step 4: Simplify right side
    118,037.16x = 8,487,410,121.97
  5. Step 5: Solve for x
    x = 8,487,410,121.97/118,037.16
  6. Step 6: Final answer
    x = 71,904.56

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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.