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Finding the Fourth Proportional to 558,704.88, 771,030.14 and 316,997.64

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Solution

The fourth proportional to 558,704.88, 771,030.14 and 316,997.64 is: 437,466.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,704.88 : 771,030.14 = 316,997.64 : x
  2. Step 2: Convert to fraction form
    558,704.88/771,030.14 = 316,997.64/x
  3. Step 3: Cross multiply
    558,704.88x = 771,030.14 × 316,997.64
  4. Step 4: Simplify right side
    558,704.88x = 244,414,733,163.88
  5. Step 5: Solve for x
    x = 244,414,733,163.88/558,704.88
  6. Step 6: Final answer
    x = 437,466.62

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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.