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Finding the Fourth Proportional to 13,461.87, 18,576.95 and 7,493.34

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Solution

The fourth proportional to 13,461.87, 18,576.95 and 7,493.34 is: 10,340.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,461.87 : 18,576.95 = 7,493.34 : x
  2. Step 2: Convert to fraction form
    13,461.87/18,576.95 = 7,493.34/x
  3. Step 3: Cross multiply
    13,461.87x = 18,576.95 × 7,493.34
  4. Step 4: Simplify right side
    13,461.87x = 139,203,365.05
  5. Step 5: Solve for x
    x = 139,203,365.05/13,461.87
  6. Step 6: Final answer
    x = 10,340.57

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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.