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Finding the Fourth Proportional to 113,906.64, 170,864.64 and 39,078.24

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Solution

The fourth proportional to 113,906.64, 170,864.64 and 39,078.24 is: 58,618.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,906.64 : 170,864.64 = 39,078.24 : x
  2. Step 2: Convert to fraction form
    113,906.64/170,864.64 = 39,078.24/x
  3. Step 3: Cross multiply
    113,906.64x = 170,864.64 × 39,078.24
  4. Step 4: Simplify right side
    113,906.64x = 6,677,089,409.43
  5. Step 5: Solve for x
    x = 6,677,089,409.43/113,906.64
  6. Step 6: Final answer
    x = 58,618.97

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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.