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Finding the Fourth Proportional to 571,766, 857,649 and 391,673.84

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Solution

The fourth proportional to 571,766, 857,649 and 391,673.84 is: 587,510.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,766 : 857,649 = 391,673.84 : x
  2. Step 2: Convert to fraction form
    571,766/857,649 = 391,673.84/x
  3. Step 3: Cross multiply
    571,766x = 857,649 × 391,673.84
  4. Step 4: Simplify right side
    571,766x = 335,918,677,202.16
  5. Step 5: Solve for x
    x = 335,918,677,202.16/571,766
  6. Step 6: Final answer
    x = 587,510.76

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.