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Finding the Fourth Proportional to 186,395.63, 279,392.32 and 91,515.47

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Solution

The fourth proportional to 186,395.63, 279,392.32 and 91,515.47 is: 137,174.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,395.63 : 279,392.32 = 91,515.47 : x
  2. Step 2: Convert to fraction form
    186,395.63/279,392.32 = 91,515.47/x
  3. Step 3: Cross multiply
    186,395.63x = 279,392.32 × 91,515.47
  4. Step 4: Simplify right side
    186,395.63x = 25,568,719,479.19
  5. Step 5: Solve for x
    x = 25,568,719,479.19/186,395.63
  6. Step 6: Final answer
    x = 137,174.46

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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.