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Finding the Fourth Proportional to 571,356.18, 857,215.31 and 343,900.89

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Solution

The fourth proportional to 571,356.18, 857,215.31 and 343,900.89 is: 515,960.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,356.18 : 857,215.31 = 343,900.89 : x
  2. Step 2: Convert to fraction form
    571,356.18/857,215.31 = 343,900.89/x
  3. Step 3: Cross multiply
    571,356.18x = 857,215.31 × 343,900.89
  4. Step 4: Simplify right side
    571,356.18x = 294,797,106,311.12
  5. Step 5: Solve for x
    x = 294,797,106,311.12/571,356.18
  6. Step 6: Final answer
    x = 515,960.30

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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.