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Finding the Fourth Proportional to 66,195.36, 91,312.92 and 41,951.80

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Solution

The fourth proportional to 66,195.36, 91,312.92 and 41,951.80 is: 57,870.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,195.36 : 91,312.92 = 41,951.80 : x
  2. Step 2: Convert to fraction form
    66,195.36/91,312.92 = 41,951.80/x
  3. Step 3: Cross multiply
    66,195.36x = 91,312.92 × 41,951.80
  4. Step 4: Simplify right side
    66,195.36x = 3,830,741,357.26
  5. Step 5: Solve for x
    x = 3,830,741,357.26/66,195.36
  6. Step 6: Final answer
    x = 57,870.24

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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.