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Finding the Fourth Proportional to 92,742.84, 139,020.80 and 36,561.21

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Solution

The fourth proportional to 92,742.84, 139,020.80 and 36,561.21 is: 54,804.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,742.84 : 139,020.80 = 36,561.21 : x
  2. Step 2: Convert to fraction form
    92,742.84/139,020.80 = 36,561.21/x
  3. Step 3: Cross multiply
    92,742.84x = 139,020.80 × 36,561.21
  4. Step 4: Simplify right side
    92,742.84x = 5,082,768,480.36
  5. Step 5: Solve for x
    x = 5,082,768,480.36/92,742.84
  6. Step 6: Final answer
    x = 54,804.97

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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.