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Finding the Fourth Proportional to 92,380.70, 127,485.70 and 49,939.23

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Solution

The fourth proportional to 92,380.70, 127,485.70 and 49,939.23 is: 68,916.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,380.70 : 127,485.70 = 49,939.23 : x
  2. Step 2: Convert to fraction form
    92,380.70/127,485.70 = 49,939.23/x
  3. Step 3: Cross multiply
    92,380.70x = 127,485.70 × 49,939.23
  4. Step 4: Simplify right side
    92,380.70x = 6,366,538,047.23
  5. Step 5: Solve for x
    x = 6,366,538,047.23/92,380.70
  6. Step 6: Final answer
    x = 68,916.32

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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.