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Finding the Fourth Proportional to 29,138.93, 40,211.19 and 17,040.57

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Solution

The fourth proportional to 29,138.93, 40,211.19 and 17,040.57 is: 23,515.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,138.93 : 40,211.19 = 17,040.57 : x
  2. Step 2: Convert to fraction form
    29,138.93/40,211.19 = 17,040.57/x
  3. Step 3: Cross multiply
    29,138.93x = 40,211.19 × 17,040.57
  4. Step 4: Simplify right side
    29,138.93x = 685,221,597.98
  5. Step 5: Solve for x
    x = 685,221,597.98/29,138.93
  6. Step 6: Final answer
    x = 23,515.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.