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Finding the Fourth Proportional to 92,959.04, 128,302.12 and 55,226

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Solution

The fourth proportional to 92,959.04, 128,302.12 and 55,226 is: 76,222.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,959.04 : 128,302.12 = 55,226 : x
  2. Step 2: Convert to fraction form
    92,959.04/128,302.12 = 55,226/x
  3. Step 3: Cross multiply
    92,959.04x = 128,302.12 × 55,226
  4. Step 4: Simplify right side
    92,959.04x = 7,085,612,879.12
  5. Step 5: Solve for x
    x = 7,085,612,879.12/92,959.04
  6. Step 6: Final answer
    x = 76,222.96

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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.