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Finding the Fourth Proportional to 291,755.64, 437,633.46 and 92,091.60

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Solution

The fourth proportional to 291,755.64, 437,633.46 and 92,091.60 is: 138,137.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,755.64 : 437,633.46 = 92,091.60 : x
  2. Step 2: Convert to fraction form
    291,755.64/437,633.46 = 92,091.60/x
  3. Step 3: Cross multiply
    291,755.64x = 437,633.46 × 92,091.60
  4. Step 4: Simplify right side
    291,755.64x = 40,302,365,544.94
  5. Step 5: Solve for x
    x = 40,302,365,544.94/291,755.64
  6. Step 6: Final answer
    x = 138,137.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.