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Finding the Fourth Proportional to 11,358.79, 17,050.97 and 4,790.50

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Solution

The fourth proportional to 11,358.79, 17,050.97 and 4,790.50 is: 7,191.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,358.79 : 17,050.97 = 4,790.50 : x
  2. Step 2: Convert to fraction form
    11,358.79/17,050.97 = 4,790.50/x
  3. Step 3: Cross multiply
    11,358.79x = 17,050.97 × 4,790.50
  4. Step 4: Simplify right side
    11,358.79x = 81,682,671.79
  5. Step 5: Solve for x
    x = 81,682,671.79/11,358.79
  6. Step 6: Final answer
    x = 7,191.14

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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.