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Finding the Fourth Proportional to 189,166.72, 261,051.81 and 104,286.82

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Solution

The fourth proportional to 189,166.72, 261,051.81 and 104,286.82 is: 143,916.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,166.72 : 261,051.81 = 104,286.82 : x
  2. Step 2: Convert to fraction form
    189,166.72/261,051.81 = 104,286.82/x
  3. Step 3: Cross multiply
    189,166.72x = 261,051.81 × 104,286.82
  4. Step 4: Simplify right side
    189,166.72x = 27,224,263,120.14
  5. Step 5: Solve for x
    x = 27,224,263,120.14/189,166.72
  6. Step 6: Final answer
    x = 143,916.77

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1.5x scale

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.