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Finding the Fourth Proportional to 401,538.60, 601,616.70 and 190,722.60

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Solution

The fourth proportional to 401,538.60, 601,616.70 and 190,722.60 is: 285,755.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,538.60 : 601,616.70 = 190,722.60 : x
  2. Step 2: Convert to fraction form
    401,538.60/601,616.70 = 190,722.60/x
  3. Step 3: Cross multiply
    401,538.60x = 601,616.70 × 190,722.60
  4. Step 4: Simplify right side
    401,538.60x = 114,741,901,227.42
  5. Step 5: Solve for x
    x = 114,741,901,227.42/401,538.60
  6. Step 6: Final answer
    x = 285,755.59

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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.