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Finding the Fourth Proportional to 92,380.64, 127,485.36 and 49,939.16

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Solution

The fourth proportional to 92,380.64, 127,485.36 and 49,939.16 is: 68,916.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,380.64 : 127,485.36 = 49,939.16 : x
  2. Step 2: Convert to fraction form
    92,380.64/127,485.36 = 49,939.16/x
  3. Step 3: Cross multiply
    92,380.64x = 127,485.36 × 49,939.16
  4. Step 4: Simplify right side
    92,380.64x = 6,366,511,153.27
  5. Step 5: Solve for x
    x = 6,366,511,153.27/92,380.64
  6. Step 6: Final answer
    x = 68,916.08

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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.