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Finding the Fourth Proportional to 111,395.28, 153,785.22 and 86,032.92

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Solution

The fourth proportional to 111,395.28, 153,785.22 and 86,032.92 is: 118,771.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,395.28 : 153,785.22 = 86,032.92 : x
  2. Step 2: Convert to fraction form
    111,395.28/153,785.22 = 86,032.92/x
  3. Step 3: Cross multiply
    111,395.28x = 153,785.22 × 86,032.92
  4. Step 4: Simplify right side
    111,395.28x = 13,230,591,529.44
  5. Step 5: Solve for x
    x = 13,230,591,529.44/111,395.28
  6. Step 6: Final answer
    x = 118,771.56

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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.