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Finding the Fourth Proportional to 185,305.11, 255,748.47 and 117,328.39

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Solution

The fourth proportional to 185,305.11, 255,748.47 and 117,328.39 is: 161,930.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,305.11 : 255,748.47 = 117,328.39 : x
  2. Step 2: Convert to fraction form
    185,305.11/255,748.47 = 117,328.39/x
  3. Step 3: Cross multiply
    185,305.11x = 255,748.47 × 117,328.39
  4. Step 4: Simplify right side
    185,305.11x = 30,006,555,051.02
  5. Step 5: Solve for x
    x = 30,006,555,051.02/185,305.11
  6. Step 6: Final answer
    x = 161,930.54

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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.