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Finding the Fourth Proportional to 186,394.63, 279,390.83 and 91,514.47

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Solution

The fourth proportional to 186,394.63, 279,390.83 and 91,514.47 is: 137,172.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,394.63 : 279,390.83 = 91,514.47 : x
  2. Step 2: Convert to fraction form
    186,394.63/279,390.83 = 91,514.47/x
  3. Step 3: Cross multiply
    186,394.63x = 279,390.83 × 91,514.47
  4. Step 4: Simplify right side
    186,394.63x = 25,568,303,272.74
  5. Step 5: Solve for x
    x = 25,568,303,272.74/186,394.63
  6. Step 6: Final answer
    x = 137,172.96

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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.