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Finding the Fourth Proportional to 111,685.15, 167,287.15 and 52,432.03

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Solution

The fourth proportional to 111,685.15, 167,287.15 and 52,432.03 is: 78,535.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,685.15 : 167,287.15 = 52,432.03 : x
  2. Step 2: Convert to fraction form
    111,685.15/167,287.15 = 52,432.03/x
  3. Step 3: Cross multiply
    111,685.15x = 167,287.15 × 52,432.03
  4. Step 4: Simplify right side
    111,685.15x = 8,771,204,867.41
  5. Step 5: Solve for x
    x = 8,771,204,867.41/111,685.15
  6. Step 6: Final answer
    x = 78,535.10

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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.