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Finding the Fourth Proportional to 186,393.36, 279,388.95 and 91,513.20

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Solution

The fourth proportional to 186,393.36, 279,388.95 and 91,513.20 is: 137,171.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,393.36 : 279,388.95 = 91,513.20 : x
  2. Step 2: Convert to fraction form
    186,393.36/279,388.95 = 91,513.20/x
  3. Step 3: Cross multiply
    186,393.36x = 279,388.95 × 91,513.20
  4. Step 4: Simplify right side
    186,393.36x = 25,567,776,859.14
  5. Step 5: Solve for x
    x = 25,567,776,859.14/186,393.36
  6. Step 6: Final answer
    x = 137,171.07

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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.