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Finding the Fourth Proportional to 66,661.26, 99,991.89 and 46,015.98

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Solution

The fourth proportional to 66,661.26, 99,991.89 and 46,015.98 is: 69,023.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,661.26 : 99,991.89 = 46,015.98 : x
  2. Step 2: Convert to fraction form
    66,661.26/99,991.89 = 46,015.98/x
  3. Step 3: Cross multiply
    66,661.26x = 99,991.89 × 46,015.98
  4. Step 4: Simplify right side
    66,661.26x = 4,601,224,810.40
  5. Step 5: Solve for x
    x = 4,601,224,810.40/66,661.26
  6. Step 6: Final answer
    x = 69,023.97

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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.