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Finding the Fourth Proportional to 222,475.54, 307,015.50 and 120,500.74

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Solution

The fourth proportional to 222,475.54, 307,015.50 and 120,500.74 is: 166,290.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,475.54 : 307,015.50 = 120,500.74 : x
  2. Step 2: Convert to fraction form
    222,475.54/307,015.50 = 120,500.74/x
  3. Step 3: Cross multiply
    222,475.54x = 307,015.50 × 120,500.74
  4. Step 4: Simplify right side
    222,475.54x = 36,995,594,744.18
  5. Step 5: Solve for x
    x = 36,995,594,744.18/222,475.54
  6. Step 6: Final answer
    x = 166,290.62

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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.