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Finding the Fourth Proportional to 186,396.63, 279,393.82 and 91,516.47

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Solution

The fourth proportional to 186,396.63, 279,393.82 and 91,516.47 is: 137,175.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,396.63 : 279,393.82 = 91,516.47 : x
  2. Step 2: Convert to fraction form
    186,396.63/279,393.82 = 91,516.47/x
  3. Step 3: Cross multiply
    186,396.63x = 279,393.82 × 91,516.47
  4. Step 4: Simplify right side
    186,396.63x = 25,569,136,146.22
  5. Step 5: Solve for x
    x = 25,569,136,146.22/186,396.63
  6. Step 6: Final answer
    x = 137,175.96

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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.