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Finding the Fourth Proportional to 141,361.95, 211,738.44 and 66,369.72

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Solution

The fourth proportional to 141,361.95, 211,738.44 and 66,369.72 is: 99,411.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,361.95 : 211,738.44 = 66,369.72 : x
  2. Step 2: Convert to fraction form
    141,361.95/211,738.44 = 66,369.72/x
  3. Step 3: Cross multiply
    141,361.95x = 211,738.44 × 66,369.72
  4. Step 4: Simplify right side
    141,361.95x = 14,053,020,976.04
  5. Step 5: Solve for x
    x = 14,053,020,976.04/141,361.95
  6. Step 6: Final answer
    x = 99,411.62

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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.