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Finding the Fourth Proportional to 68,897.42, 103,258.65 and 33,351.38

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Solution

The fourth proportional to 68,897.42, 103,258.65 and 33,351.38 is: 49,984.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,897.42 : 103,258.65 = 33,351.38 : x
  2. Step 2: Convert to fraction form
    68,897.42/103,258.65 = 33,351.38/x
  3. Step 3: Cross multiply
    68,897.42x = 103,258.65 × 33,351.38
  4. Step 4: Simplify right side
    68,897.42x = 3,443,818,474.44
  5. Step 5: Solve for x
    x = 3,443,818,474.44/68,897.42
  6. Step 6: Final answer
    x = 49,984.72

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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.