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Finding the Fourth Proportional to 108,855.48, 163,289.30 and 33,985.97

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Solution

The fourth proportional to 108,855.48, 163,289.30 and 33,985.97 is: 50,980.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,855.48 : 163,289.30 = 33,985.97 : x
  2. Step 2: Convert to fraction form
    108,855.48/163,289.30 = 33,985.97/x
  3. Step 3: Cross multiply
    108,855.48x = 163,289.30 × 33,985.97
  4. Step 4: Simplify right side
    108,855.48x = 5,549,544,927.86
  5. Step 5: Solve for x
    x = 5,549,544,927.86/108,855.48
  6. Step 6: Final answer
    x = 50,980.85

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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.