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Finding the Fourth Proportional to 13,059.63, 18,017.87 and 8,583.03

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Solution

The fourth proportional to 13,059.63, 18,017.87 and 8,583.03 is: 11,841.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,059.63 : 18,017.87 = 8,583.03 : x
  2. Step 2: Convert to fraction form
    13,059.63/18,017.87 = 8,583.03/x
  3. Step 3: Cross multiply
    13,059.63x = 18,017.87 × 8,583.03
  4. Step 4: Simplify right side
    13,059.63x = 154,647,875.83
  5. Step 5: Solve for x
    x = 154,647,875.83/13,059.63
  6. Step 6: Final answer
    x = 11,841.67

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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.