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Finding the Fourth Proportional to 92,972.56, 128,273.64 and 52,679.92

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Solution

The fourth proportional to 92,972.56, 128,273.64 and 52,679.92 is: 72,682.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,972.56 : 128,273.64 = 52,679.92 : x
  2. Step 2: Convert to fraction form
    92,972.56/128,273.64 = 52,679.92/x
  3. Step 3: Cross multiply
    92,972.56x = 128,273.64 × 52,679.92
  4. Step 4: Simplify right side
    92,972.56x = 6,757,445,093.31
  5. Step 5: Solve for x
    x = 6,757,445,093.31/92,972.56
  6. Step 6: Final answer
    x = 72,682.15

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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.