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Finding the Fourth Proportional to 52,740.84, 79,123.11 and 17,679.60

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Solution

The fourth proportional to 52,740.84, 79,123.11 and 17,679.60 is: 26,523.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,740.84 : 79,123.11 = 17,679.60 : x
  2. Step 2: Convert to fraction form
    52,740.84/79,123.11 = 17,679.60/x
  3. Step 3: Cross multiply
    52,740.84x = 79,123.11 × 17,679.60
  4. Step 4: Simplify right side
    52,740.84x = 1,398,864,935.56
  5. Step 5: Solve for x
    x = 1,398,864,935.56/52,740.84
  6. Step 6: Final answer
    x = 26,523.37

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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.