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Finding the Fourth Proportional to 92,958.67, 128,283.78 and 50,517.20

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Solution

The fourth proportional to 92,958.67, 128,283.78 and 50,517.20 is: 69,714.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,958.67 : 128,283.78 = 50,517.20 : x
  2. Step 2: Convert to fraction form
    92,958.67/128,283.78 = 50,517.20/x
  3. Step 3: Cross multiply
    92,958.67x = 128,283.78 × 50,517.20
  4. Step 4: Simplify right side
    92,958.67x = 6,480,537,371.02
  5. Step 5: Solve for x
    x = 6,480,537,371.02/92,958.67
  6. Step 6: Final answer
    x = 69,714.18

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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.