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Finding the Fourth Proportional to 111,915.75, 167,873.63 and 38,043.75

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Solution

The fourth proportional to 111,915.75, 167,873.63 and 38,043.75 is: 57,065.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,915.75 : 167,873.63 = 38,043.75 : x
  2. Step 2: Convert to fraction form
    111,915.75/167,873.63 = 38,043.75/x
  3. Step 3: Cross multiply
    111,915.75x = 167,873.63 × 38,043.75
  4. Step 4: Simplify right side
    111,915.75x = 6,386,542,221.09
  5. Step 5: Solve for x
    x = 6,386,542,221.09/111,915.75
  6. Step 6: Final answer
    x = 57,065.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.