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Finding the Fourth Proportional to 189,967.16, 262,167.72 and 109,415.96

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Solution

The fourth proportional to 189,967.16, 262,167.72 and 109,415.96 is: 151,001.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,967.16 : 262,167.72 = 109,415.96 : x
  2. Step 2: Convert to fraction form
    189,967.16/262,167.72 = 109,415.96/x
  3. Step 3: Cross multiply
    189,967.16x = 262,167.72 × 109,415.96
  4. Step 4: Simplify right side
    189,967.16x = 28,685,332,764.81
  5. Step 5: Solve for x
    x = 28,685,332,764.81/189,967.16
  6. Step 6: Final answer
    x = 151,001.54

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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.