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Finding the Fourth Proportional to 118,810.90, 163,943.49 and 71,046.82

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Solution

The fourth proportional to 118,810.90, 163,943.49 and 71,046.82 is: 98,035.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,810.90 : 163,943.49 = 71,046.82 : x
  2. Step 2: Convert to fraction form
    118,810.90/163,943.49 = 71,046.82/x
  3. Step 3: Cross multiply
    118,810.90x = 163,943.49 × 71,046.82
  4. Step 4: Simplify right side
    118,810.90x = 11,647,663,624.20
  5. Step 5: Solve for x
    x = 11,647,663,624.20/118,810.90
  6. Step 6: Final answer
    x = 98,035.31

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.