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Finding the Fourth Proportional to 86,209.56, 118,955.28 and 48,481.56

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Solution

The fourth proportional to 86,209.56, 118,955.28 and 48,481.56 is: 66,896.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,209.56 : 118,955.28 = 48,481.56 : x
  2. Step 2: Convert to fraction form
    86,209.56/118,955.28 = 48,481.56/x
  3. Step 3: Cross multiply
    86,209.56x = 118,955.28 × 48,481.56
  4. Step 4: Simplify right side
    86,209.56x = 5,767,137,544.64
  5. Step 5: Solve for x
    x = 5,767,137,544.64/86,209.56
  6. Step 6: Final answer
    x = 66,896.73

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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.