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Finding the Fourth Proportional to 111,816.07, 167,724.12 and 76,649.11

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Solution

The fourth proportional to 111,816.07, 167,724.12 and 76,649.11 is: 114,973.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,816.07 : 167,724.12 = 76,649.11 : x
  2. Step 2: Convert to fraction form
    111,816.07/167,724.12 = 76,649.11/x
  3. Step 3: Cross multiply
    111,816.07x = 167,724.12 × 76,649.11
  4. Step 4: Simplify right side
    111,816.07x = 12,855,904,523.53
  5. Step 5: Solve for x
    x = 12,855,904,523.53/111,816.07
  6. Step 6: Final answer
    x = 114,973.68

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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.