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Finding the Fourth Proportional to 619,237.28, 854,808.72 and 418,305.44

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Solution

The fourth proportional to 619,237.28, 854,808.72 and 418,305.44 is: 577,438.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,237.28 : 854,808.72 = 418,305.44 : x
  2. Step 2: Convert to fraction form
    619,237.28/854,808.72 = 418,305.44/x
  3. Step 3: Cross multiply
    619,237.28x = 854,808.72 × 418,305.44
  4. Step 4: Simplify right side
    619,237.28x = 357,571,137,735.44
  5. Step 5: Solve for x
    x = 357,571,137,735.44/619,237.28
  6. Step 6: Final answer
    x = 577,438.00

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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.