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Finding the Fourth Proportional to 110,829.20, 166,243.80 and 77,586.80

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Solution

The fourth proportional to 110,829.20, 166,243.80 and 77,586.80 is: 116,380.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,829.20 : 166,243.80 = 77,586.80 : x
  2. Step 2: Convert to fraction form
    110,829.20/166,243.80 = 77,586.80/x
  3. Step 3: Cross multiply
    110,829.20x = 166,243.80 × 77,586.80
  4. Step 4: Simplify right side
    110,829.20x = 12,898,324,461.84
  5. Step 5: Solve for x
    x = 12,898,324,461.84/110,829.20
  6. Step 6: Final answer
    x = 116,380.20

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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.