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Finding the Fourth Proportional to 619,828.80, 927,969.30 and 381,567.30

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Solution

The fourth proportional to 619,828.80, 927,969.30 and 381,567.30 is: 571,258.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,828.80 : 927,969.30 = 381,567.30 : x
  2. Step 2: Convert to fraction form
    619,828.80/927,969.30 = 381,567.30/x
  3. Step 3: Cross multiply
    619,828.80x = 927,969.30 × 381,567.30
  4. Step 4: Simplify right side
    619,828.80x = 354,082,740,283.89
  5. Step 5: Solve for x
    x = 354,082,740,283.89/619,828.80
  6. Step 6: Final answer
    x = 571,258.94

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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.