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Finding the Fourth Proportional to 401,672.64, 602,524.64 and 121,189.92

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Solution

The fourth proportional to 401,672.64, 602,524.64 and 121,189.92 is: 181,789.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,672.64 : 602,524.64 = 121,189.92 : x
  2. Step 2: Convert to fraction form
    401,672.64/602,524.64 = 121,189.92/x
  3. Step 3: Cross multiply
    401,672.64x = 602,524.64 × 121,189.92
  4. Step 4: Simplify right side
    401,672.64x = 73,019,912,919.63
  5. Step 5: Solve for x
    x = 73,019,912,919.63/401,672.64
  6. Step 6: Final answer
    x = 181,789.61

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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.