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Finding the Fourth Proportional to 118,272.40, 177,149.40 and 102,720.40

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Solution

The fourth proportional to 118,272.40, 177,149.40 and 102,720.40 is: 153,855.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,272.40 : 177,149.40 = 102,720.40 : x
  2. Step 2: Convert to fraction form
    118,272.40/177,149.40 = 102,720.40/x
  3. Step 3: Cross multiply
    118,272.40x = 177,149.40 × 102,720.40
  4. Step 4: Simplify right side
    118,272.40x = 18,196,857,227.76
  5. Step 5: Solve for x
    x = 18,196,857,227.76/118,272.40
  6. Step 6: Final answer
    x = 153,855.48

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.