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Finding the Fourth Proportional to 201,663.15, 302,494.73 and 68,693.55

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Solution

The fourth proportional to 201,663.15, 302,494.73 and 68,693.55 is: 103,040.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,663.15 : 302,494.73 = 68,693.55 : x
  2. Step 2: Convert to fraction form
    201,663.15/302,494.73 = 68,693.55/x
  3. Step 3: Cross multiply
    201,663.15x = 302,494.73 × 68,693.55
  4. Step 4: Simplify right side
    201,663.15x = 20,779,436,516.52
  5. Step 5: Solve for x
    x = 20,779,436,516.52/201,663.15
  6. Step 6: Final answer
    x = 103,040.33

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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.