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Finding the Fourth Proportional to 346,722.80, 518,932.20 and 251,682.80

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Solution

The fourth proportional to 346,722.80, 518,932.20 and 251,682.80 is: 376,687.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,722.80 : 518,932.20 = 251,682.80 : x
  2. Step 2: Convert to fraction form
    346,722.80/518,932.20 = 251,682.80/x
  3. Step 3: Cross multiply
    346,722.80x = 518,932.20 × 251,682.80
  4. Step 4: Simplify right side
    346,722.80x = 130,606,309,106.16
  5. Step 5: Solve for x
    x = 130,606,309,106.16/346,722.80
  6. Step 6: Final answer
    x = 376,687.97

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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.