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Finding the Fourth Proportional to 118,855, 178,322.24 and 38,896.60

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Solution

The fourth proportional to 118,855, 178,322.24 and 38,896.60 is: 58,357.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,855 : 178,322.24 = 38,896.60 : x
  2. Step 2: Convert to fraction form
    118,855/178,322.24 = 38,896.60/x
  3. Step 3: Cross multiply
    118,855x = 178,322.24 × 38,896.60
  4. Step 4: Simplify right side
    118,855x = 6,936,128,840.38
  5. Step 5: Solve for x
    x = 6,936,128,840.38/118,855
  6. Step 6: Final answer
    x = 58,357.91

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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.