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Finding the Fourth Proportional to 619,417.42, 928,498.62 and 419,758

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Solution

The fourth proportional to 619,417.42, 928,498.62 and 419,758 is: 629,211.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,417.42 : 928,498.62 = 419,758 : x
  2. Step 2: Convert to fraction form
    619,417.42/928,498.62 = 419,758/x
  3. Step 3: Cross multiply
    619,417.42x = 928,498.62 × 419,758
  4. Step 4: Simplify right side
    619,417.42x = 389,744,723,733.96
  5. Step 5: Solve for x
    x = 389,744,723,733.96/619,417.42
  6. Step 6: Final answer
    x = 629,211.76

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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.