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Finding the Fourth Proportional to 653,408.64, 979,859.16 and 253,996.56

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Solution

The fourth proportional to 653,408.64, 979,859.16 and 253,996.56 is: 380,896.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    653,408.64 : 979,859.16 = 253,996.56 : x
  2. Step 2: Convert to fraction form
    653,408.64/979,859.16 = 253,996.56/x
  3. Step 3: Cross multiply
    653,408.64x = 979,859.16 × 253,996.56
  4. Step 4: Simplify right side
    653,408.64x = 248,880,855,924.49
  5. Step 5: Solve for x
    x = 248,880,855,924.49/653,408.64
  6. Step 6: Final answer
    x = 380,896.18

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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.