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Finding the Fourth Proportional to 347,157.21, 520,063.28 and 196,943.10

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Solution

The fourth proportional to 347,157.21, 520,063.28 and 196,943.10 is: 295,033.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,157.21 : 520,063.28 = 196,943.10 : x
  2. Step 2: Convert to fraction form
    347,157.21/520,063.28 = 196,943.10/x
  3. Step 3: Cross multiply
    347,157.21x = 520,063.28 × 196,943.10
  4. Step 4: Simplify right side
    347,157.21x = 102,422,873,574.65
  5. Step 5: Solve for x
    x = 102,422,873,574.65/347,157.21
  6. Step 6: Final answer
    x = 295,033.12

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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.