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Finding the Fourth Proportional to 86,664.72, 119,481.66 and 68,818.80

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Solution

The fourth proportional to 86,664.72, 119,481.66 and 68,818.80 is: 94,878.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,664.72 : 119,481.66 = 68,818.80 : x
  2. Step 2: Convert to fraction form
    86,664.72/119,481.66 = 68,818.80/x
  3. Step 3: Cross multiply
    86,664.72x = 119,481.66 × 68,818.80
  4. Step 4: Simplify right side
    86,664.72x = 8,222,584,463.21
  5. Step 5: Solve for x
    x = 8,222,584,463.21/86,664.72
  6. Step 6: Final answer
    x = 94,878.11

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1.5x scale

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.