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Finding the Fourth Proportional to 219,012.54, 328,570.11 and 92,664.15

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Solution

The fourth proportional to 219,012.54, 328,570.11 and 92,664.15 is: 139,017.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,012.54 : 328,570.11 = 92,664.15 : x
  2. Step 2: Convert to fraction form
    219,012.54/328,570.11 = 92,664.15/x
  3. Step 3: Cross multiply
    219,012.54x = 328,570.11 × 92,664.15
  4. Step 4: Simplify right side
    219,012.54x = 30,446,669,958.56
  5. Step 5: Solve for x
    x = 30,446,669,958.56/219,012.54
  6. Step 6: Final answer
    x = 139,017.93

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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.