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Finding the Fourth Proportional to 221,276.56, 331,916.04 and 55,064.56

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Solution

The fourth proportional to 221,276.56, 331,916.04 and 55,064.56 is: 82,597.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,276.56 : 331,916.04 = 55,064.56 : x
  2. Step 2: Convert to fraction form
    221,276.56/331,916.04 = 55,064.56/x
  3. Step 3: Cross multiply
    221,276.56x = 331,916.04 × 55,064.56
  4. Step 4: Simplify right side
    221,276.56x = 18,276,810,699.54
  5. Step 5: Solve for x
    x = 18,276,810,699.54/221,276.56
  6. Step 6: Final answer
    x = 82,597.14

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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.