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Finding the Fourth Proportional to 186,161.69, 279,048.11 and 91,260.47

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Solution

The fourth proportional to 186,161.69, 279,048.11 and 91,260.47 is: 136,795.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,161.69 : 279,048.11 = 91,260.47 : x
  2. Step 2: Convert to fraction form
    186,161.69/279,048.11 = 91,260.47/x
  3. Step 3: Cross multiply
    186,161.69x = 279,048.11 × 91,260.47
  4. Step 4: Simplify right side
    186,161.69x = 25,466,061,671.21
  5. Step 5: Solve for x
    x = 25,466,061,671.21/186,161.69
  6. Step 6: Final answer
    x = 136,795.39

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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.