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Finding the Fourth Proportional to 186,289.54, 279,215.61 and 86,238.39

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Solution

The fourth proportional to 186,289.54, 279,215.61 and 86,238.39 is: 129,256.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,289.54 : 279,215.61 = 86,238.39 : x
  2. Step 2: Convert to fraction form
    186,289.54/279,215.61 = 86,238.39/x
  3. Step 3: Cross multiply
    186,289.54x = 279,215.61 × 86,238.39
  4. Step 4: Simplify right side
    186,289.54x = 24,079,103,822.34
  5. Step 5: Solve for x
    x = 24,079,103,822.34/186,289.54
  6. Step 6: Final answer
    x = 129,256.34

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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.