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Finding the Fourth Proportional to 186,396.68, 279,318.53 and 136,906.76

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Solution

The fourth proportional to 186,396.68, 279,318.53 and 136,906.76 is: 205,157.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,396.68 : 279,318.53 = 136,906.76 : x
  2. Step 2: Convert to fraction form
    186,396.68/279,318.53 = 136,906.76/x
  3. Step 3: Cross multiply
    186,396.68x = 279,318.53 × 136,906.76
  4. Step 4: Simplify right side
    186,396.68x = 38,240,592,869.14
  5. Step 5: Solve for x
    x = 38,240,592,869.14/186,396.68
  6. Step 6: Final answer
    x = 205,157.05

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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.