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Finding the Fourth Proportional to 111,601.80, 154,003.68 and 61,300.80

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Solution

The fourth proportional to 111,601.80, 154,003.68 and 61,300.80 is: 84,591.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,601.80 : 154,003.68 = 61,300.80 : x
  2. Step 2: Convert to fraction form
    111,601.80/154,003.68 = 61,300.80/x
  3. Step 3: Cross multiply
    111,601.80x = 154,003.68 × 61,300.80
  4. Step 4: Simplify right side
    111,601.80x = 9,440,548,786.94
  5. Step 5: Solve for x
    x = 9,440,548,786.94/111,601.80
  6. Step 6: Final answer
    x = 84,591.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.