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Finding the Fourth Proportional to 571,087.80, 856,028.84 and 191,648.75

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Solution

The fourth proportional to 571,087.80, 856,028.84 and 191,648.75 is: 287,270.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,087.80 : 856,028.84 = 191,648.75 : x
  2. Step 2: Convert to fraction form
    571,087.80/856,028.84 = 191,648.75/x
  3. Step 3: Cross multiply
    571,087.80x = 856,028.84 × 191,648.75
  4. Step 4: Simplify right side
    571,087.80x = 164,056,851,911.56
  5. Step 5: Solve for x
    x = 164,056,851,911.56/571,087.80
  6. Step 6: Final answer
    x = 287,270.80

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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.