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Finding the Fourth Proportional to 502,989.24, 694,130.94 and 276,638.52

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Solution

The fourth proportional to 502,989.24, 694,130.94 and 276,638.52 is: 381,764.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    502,989.24 : 694,130.94 = 276,638.52 : x
  2. Step 2: Convert to fraction form
    502,989.24/694,130.94 = 276,638.52/x
  3. Step 3: Cross multiply
    502,989.24x = 694,130.94 × 276,638.52
  4. Step 4: Simplify right side
    502,989.24x = 192,023,355,927.81
  5. Step 5: Solve for x
    x = 192,023,355,927.81/502,989.24
  6. Step 6: Final answer
    x = 381,764.34

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.