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Finding the Fourth Proportional to 619,381.80, 928,842.30 and 245,327.40

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Solution

The fourth proportional to 619,381.80, 928,842.30 and 245,327.40 is: 367,899.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,381.80 : 928,842.30 = 245,327.40 : x
  2. Step 2: Convert to fraction form
    619,381.80/928,842.30 = 245,327.40/x
  3. Step 3: Cross multiply
    619,381.80x = 928,842.30 × 245,327.40
  4. Step 4: Simplify right side
    619,381.80x = 227,870,466,469.02
  5. Step 5: Solve for x
    x = 227,870,466,469.02/619,381.80
  6. Step 6: Final answer
    x = 367,899.84

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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.