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Finding the Fourth Proportional to 118,891.49, 178,335.75 and 28,934.72

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Solution

The fourth proportional to 118,891.49, 178,335.75 and 28,934.72 is: 43,401.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,891.49 : 178,335.75 = 28,934.72 : x
  2. Step 2: Convert to fraction form
    118,891.49/178,335.75 = 28,934.72/x
  3. Step 3: Cross multiply
    118,891.49x = 178,335.75 × 28,934.72
  4. Step 4: Simplify right side
    118,891.49x = 5,160,094,992.24
  5. Step 5: Solve for x
    x = 5,160,094,992.24/118,891.49
  6. Step 6: Final answer
    x = 43,401.72

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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.