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Finding the Fourth Proportional to 92,997.60, 128,334 and 52,715.08

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Solution

The fourth proportional to 92,997.60, 128,334 and 52,715.08 is: 72,745.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,997.60 : 128,334 = 52,715.08 : x
  2. Step 2: Convert to fraction form
    92,997.60/128,334 = 52,715.08/x
  3. Step 3: Cross multiply
    92,997.60x = 128,334 × 52,715.08
  4. Step 4: Simplify right side
    92,997.60x = 6,765,137,076.72
  5. Step 5: Solve for x
    x = 6,765,137,076.72/92,997.60
  6. Step 6: Final answer
    x = 72,745.29

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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.