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Finding the Fourth Proportional to 111,993.32, 154,550.76 and 61,692.32

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Solution

The fourth proportional to 111,993.32, 154,550.76 and 61,692.32 is: 85,135.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,993.32 : 154,550.76 = 61,692.32 : x
  2. Step 2: Convert to fraction form
    111,993.32/154,550.76 = 61,692.32/x
  3. Step 3: Cross multiply
    111,993.32x = 154,550.76 × 61,692.32
  4. Step 4: Simplify right side
    111,993.32x = 9,534,594,942.16
  5. Step 5: Solve for x
    x = 9,534,594,942.16/111,993.32
  6. Step 6: Final answer
    x = 85,135.39

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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.