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Finding the Fourth Proportional to 111,715.80, 167,573.70 and 99,274.20

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Solution

The fourth proportional to 111,715.80, 167,573.70 and 99,274.20 is: 148,911.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,715.80 : 167,573.70 = 99,274.20 : x
  2. Step 2: Convert to fraction form
    111,715.80/167,573.70 = 99,274.20/x
  3. Step 3: Cross multiply
    111,715.80x = 167,573.70 × 99,274.20
  4. Step 4: Simplify right side
    111,715.80x = 16,635,745,008.54
  5. Step 5: Solve for x
    x = 16,635,745,008.54/111,715.80
  6. Step 6: Final answer
    x = 148,911.30

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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.