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Finding the Fourth Proportional to 619,435.88, 928,526.52 and 419,776.64

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Solution

The fourth proportional to 619,435.88, 928,526.52 and 419,776.64 is: 629,239.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,435.88 : 928,526.52 = 419,776.64 : x
  2. Step 2: Convert to fraction form
    619,435.88/928,526.52 = 419,776.64/x
  3. Step 3: Cross multiply
    619,435.88x = 928,526.52 × 419,776.64
  4. Step 4: Simplify right side
    619,435.88x = 389,773,742,716.49
  5. Step 5: Solve for x
    x = 389,773,742,716.49/619,435.88
  6. Step 6: Final answer
    x = 629,239.85

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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.