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Finding the Fourth Proportional to 123,777.20, 185,665.80 and 110,946.80

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Solution

The fourth proportional to 123,777.20, 185,665.80 and 110,946.80 is: 166,420.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,777.20 : 185,665.80 = 110,946.80 : x
  2. Step 2: Convert to fraction form
    123,777.20/185,665.80 = 110,946.80/x
  3. Step 3: Cross multiply
    123,777.20x = 185,665.80 × 110,946.80
  4. Step 4: Simplify right side
    123,777.20x = 20,599,026,379.44
  5. Step 5: Solve for x
    x = 20,599,026,379.44/123,777.20
  6. Step 6: Final answer
    x = 166,420.20

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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.