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Finding the Fourth Proportional to 86,219.64, 119,057.94 and 63,597.96

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Solution

The fourth proportional to 86,219.64, 119,057.94 and 63,597.96 is: 87,820.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,219.64 : 119,057.94 = 63,597.96 : x
  2. Step 2: Convert to fraction form
    86,219.64/119,057.94 = 63,597.96/x
  3. Step 3: Cross multiply
    86,219.64x = 119,057.94 × 63,597.96
  4. Step 4: Simplify right side
    86,219.64x = 7,571,842,105.80
  5. Step 5: Solve for x
    x = 7,571,842,105.80/86,219.64
  6. Step 6: Final answer
    x = 87,820.39

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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.