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Finding the Fourth Proportional to 186,404.30, 279,538.40 and 68,040.62

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Solution

The fourth proportional to 186,404.30, 279,538.40 and 68,040.62 is: 102,036.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,404.30 : 279,538.40 = 68,040.62 : x
  2. Step 2: Convert to fraction form
    186,404.30/279,538.40 = 68,040.62/x
  3. Step 3: Cross multiply
    186,404.30x = 279,538.40 × 68,040.62
  4. Step 4: Simplify right side
    186,404.30x = 19,019,966,049.81
  5. Step 5: Solve for x
    x = 19,019,966,049.81/186,404.30
  6. Step 6: Final answer
    x = 102,036.09

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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.