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Finding the Fourth Proportional to 619,661.80, 928,110.30 and 509,069.80

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Solution

The fourth proportional to 619,661.80, 928,110.30 and 509,069.80 is: 762,469.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,661.80 : 928,110.30 = 509,069.80 : x
  2. Step 2: Convert to fraction form
    619,661.80/928,110.30 = 509,069.80/x
  3. Step 3: Cross multiply
    619,661.80x = 928,110.30 × 509,069.80
  4. Step 4: Simplify right side
    619,661.80x = 472,472,924,798.94
  5. Step 5: Solve for x
    x = 472,472,924,798.94/619,661.80
  6. Step 6: Final answer
    x = 762,469.02

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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.