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Finding the Fourth Proportional to 186,392.88, 279,388.20 and 91,512.72

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Solution

The fourth proportional to 186,392.88, 279,388.20 and 91,512.72 is: 137,170.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,392.88 : 279,388.20 = 91,512.72 : x
  2. Step 2: Convert to fraction form
    186,392.88/279,388.20 = 91,512.72/x
  3. Step 3: Cross multiply
    186,392.88x = 279,388.20 × 91,512.72
  4. Step 4: Simplify right side
    186,392.88x = 25,567,574,117.90
  5. Step 5: Solve for x
    x = 25,567,574,117.90/186,392.88
  6. Step 6: Final answer
    x = 137,170.34

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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.