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Finding the Fourth Proportional to 86,228.01, 118,961.60 and 63,620.91

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Solution

The fourth proportional to 86,228.01, 118,961.60 and 63,620.91 is: 87,772.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,228.01 : 118,961.60 = 63,620.91 : x
  2. Step 2: Convert to fraction form
    86,228.01/118,961.60 = 63,620.91/x
  3. Step 3: Cross multiply
    86,228.01x = 118,961.60 × 63,620.91
  4. Step 4: Simplify right side
    86,228.01x = 7,568,444,928.95
  5. Step 5: Solve for x
    x = 7,568,444,928.95/86,228.01
  6. Step 6: Final answer
    x = 87,772.46

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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.