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Finding the Fourth Proportional to 111,763.80, 167,645.70 and 99,516.60

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Solution

The fourth proportional to 111,763.80, 167,645.70 and 99,516.60 is: 149,274.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,763.80 : 167,645.70 = 99,516.60 : x
  2. Step 2: Convert to fraction form
    111,763.80/167,645.70 = 99,516.60/x
  3. Step 3: Cross multiply
    111,763.80x = 167,645.70 × 99,516.60
  4. Step 4: Simplify right side
    111,763.80x = 16,683,530,068.62
  5. Step 5: Solve for x
    x = 16,683,530,068.62/111,763.80
  6. Step 6: Final answer
    x = 149,274.90

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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.