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Finding the Fourth Proportional to 111,806.07, 167,709.10 and 76,639.11

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Solution

The fourth proportional to 111,806.07, 167,709.10 and 76,639.11 is: 114,958.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,806.07 : 167,709.10 = 76,639.11 : x
  2. Step 2: Convert to fraction form
    111,806.07/167,709.10 = 76,639.11/x
  3. Step 3: Cross multiply
    111,806.07x = 167,709.10 × 76,639.11
  4. Step 4: Simplify right side
    111,806.07x = 12,853,076,162.90
  5. Step 5: Solve for x
    x = 12,853,076,162.90/111,806.07
  6. Step 6: Final answer
    x = 114,958.66

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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.