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Finding the Fourth Proportional to 401,079.45, 601,753.16 and 131,219.94

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Solution

The fourth proportional to 401,079.45, 601,753.16 and 131,219.94 is: 196,873.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,079.45 : 601,753.16 = 131,219.94 : x
  2. Step 2: Convert to fraction form
    401,079.45/601,753.16 = 131,219.94/x
  3. Step 3: Cross multiply
    401,079.45x = 601,753.16 × 131,219.94
  4. Step 4: Simplify right side
    401,079.45x = 78,962,009,885.14
  5. Step 5: Solve for x
    x = 78,962,009,885.14/401,079.45
  6. Step 6: Final answer
    x = 196,873.74

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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.