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Finding the Fourth Proportional to 186,680.29, 280,110.54 and 91,859.05

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Solution

The fourth proportional to 186,680.29, 280,110.54 and 91,859.05 is: 137,832.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,680.29 : 280,110.54 = 91,859.05 : x
  2. Step 2: Convert to fraction form
    186,680.29/280,110.54 = 91,859.05/x
  3. Step 3: Cross multiply
    186,680.29x = 280,110.54 × 91,859.05
  4. Step 4: Simplify right side
    186,680.29x = 25,730,688,099.39
  5. Step 5: Solve for x
    x = 25,730,688,099.39/186,680.29
  6. Step 6: Final answer
    x = 137,832.91

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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.