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Finding the Fourth Proportional to 186,679.29, 280,109.04 and 91,858.05

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Solution

The fourth proportional to 186,679.29, 280,109.04 and 91,858.05 is: 137,831.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,679.29 : 280,109.04 = 91,858.05 : x
  2. Step 2: Convert to fraction form
    186,679.29/280,109.04 = 91,858.05/x
  3. Step 3: Cross multiply
    186,679.29x = 280,109.04 × 91,858.05
  4. Step 4: Simplify right side
    186,679.29x = 25,730,270,201.77
  5. Step 5: Solve for x
    x = 25,730,270,201.77/186,679.29
  6. Step 6: Final answer
    x = 137,831.41

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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.