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Finding the Fourth Proportional to 111,980.90, 154,529.01 and 60,993.83

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Solution

The fourth proportional to 111,980.90, 154,529.01 and 60,993.83 is: 84,168.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,980.90 : 154,529.01 = 60,993.83 : x
  2. Step 2: Convert to fraction form
    111,980.90/154,529.01 = 60,993.83/x
  3. Step 3: Cross multiply
    111,980.90x = 154,529.01 × 60,993.83
  4. Step 4: Simplify right side
    111,980.90x = 9,425,315,393.36
  5. Step 5: Solve for x
    x = 9,425,315,393.36/111,980.90
  6. Step 6: Final answer
    x = 84,168.96

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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.