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Finding the Fourth Proportional to 168,438.99, 232,439.72 and 92,985.87

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Solution

The fourth proportional to 168,438.99, 232,439.72 and 92,985.87 is: 128,317.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,438.99 : 232,439.72 = 92,985.87 : x
  2. Step 2: Convert to fraction form
    168,438.99/232,439.72 = 92,985.87/x
  3. Step 3: Cross multiply
    168,438.99x = 232,439.72 × 92,985.87
  4. Step 4: Simplify right side
    168,438.99x = 21,613,609,121.83
  5. Step 5: Solve for x
    x = 21,613,609,121.83/168,438.99
  6. Step 6: Final answer
    x = 128,317.14

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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.