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Finding the Fourth Proportional to 74,844.70, 112,266.61 and 18,684.70

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Solution

The fourth proportional to 74,844.70, 112,266.61 and 18,684.70 is: 28,026.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,844.70 : 112,266.61 = 18,684.70 : x
  2. Step 2: Convert to fraction form
    74,844.70/112,266.61 = 18,684.70/x
  3. Step 3: Cross multiply
    74,844.70x = 112,266.61 × 18,684.70
  4. Step 4: Simplify right side
    74,844.70x = 2,097,667,600.49
  5. Step 5: Solve for x
    x = 2,097,667,600.49/74,844.70
  6. Step 6: Final answer
    x = 28,026.94

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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.