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Finding the Fourth Proportional to 217,261.70, 325,892.55 and 122,783.30

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Solution

The fourth proportional to 217,261.70, 325,892.55 and 122,783.30 is: 184,174.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,261.70 : 325,892.55 = 122,783.30 : x
  2. Step 2: Convert to fraction form
    217,261.70/325,892.55 = 122,783.30/x
  3. Step 3: Cross multiply
    217,261.70x = 325,892.55 × 122,783.30
  4. Step 4: Simplify right side
    217,261.70x = 40,014,162,734.42
  5. Step 5: Solve for x
    x = 40,014,162,734.42/217,261.70
  6. Step 6: Final answer
    x = 184,174.95

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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.