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Finding the Fourth Proportional to 42,674.84, 63,926.52 and 21,262.97

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Solution

The fourth proportional to 42,674.84, 63,926.52 and 21,262.97 is: 31,851.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,674.84 : 63,926.52 = 21,262.97 : x
  2. Step 2: Convert to fraction form
    42,674.84/63,926.52 = 21,262.97/x
  3. Step 3: Cross multiply
    42,674.84x = 63,926.52 × 21,262.97
  4. Step 4: Simplify right side
    42,674.84x = 1,359,267,676.96
  5. Step 5: Solve for x
    x = 1,359,267,676.96/42,674.84
  6. Step 6: Final answer
    x = 31,851.73

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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.