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Finding the Fourth Proportional to 170,365.05, 234,978.66 and 109,905.03

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Solution

The fourth proportional to 170,365.05, 234,978.66 and 109,905.03 is: 151,588.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,365.05 : 234,978.66 = 109,905.03 : x
  2. Step 2: Convert to fraction form
    170,365.05/234,978.66 = 109,905.03/x
  3. Step 3: Cross multiply
    170,365.05x = 234,978.66 × 109,905.03
  4. Step 4: Simplify right side
    170,365.05x = 25,825,336,676.66
  5. Step 5: Solve for x
    x = 25,825,336,676.66/170,365.05
  6. Step 6: Final answer
    x = 151,588.23

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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.