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Finding the Fourth Proportional to 530,687.34, 796,029.21 and 215,143.50

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Solution

The fourth proportional to 530,687.34, 796,029.21 and 215,143.50 is: 322,714.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,687.34 : 796,029.21 = 215,143.50 : x
  2. Step 2: Convert to fraction form
    530,687.34/796,029.21 = 215,143.50/x
  3. Step 3: Cross multiply
    530,687.34x = 796,029.21 × 215,143.50
  4. Step 4: Simplify right side
    530,687.34x = 171,260,510,341.64
  5. Step 5: Solve for x
    x = 171,260,510,341.64/530,687.34
  6. Step 6: Final answer
    x = 322,714.52

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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.