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Finding the Fourth Proportional to 85,876.66, 118,487.36 and 49,569.22

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Solution

The fourth proportional to 85,876.66, 118,487.36 and 49,569.22 is: 68,392.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,876.66 : 118,487.36 = 49,569.22 : x
  2. Step 2: Convert to fraction form
    85,876.66/118,487.36 = 49,569.22/x
  3. Step 3: Cross multiply
    85,876.66x = 118,487.36 × 49,569.22
  4. Step 4: Simplify right side
    85,876.66x = 5,873,326,015.06
  5. Step 5: Solve for x
    x = 5,873,326,015.06/85,876.66
  6. Step 6: Final answer
    x = 68,392.58

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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.