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Finding the Fourth Proportional to 18,562.45, 25,615.90 and 10,064.43

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Solution

The fourth proportional to 18,562.45, 25,615.90 and 10,064.43 is: 13,888.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,562.45 : 25,615.90 = 10,064.43 : x
  2. Step 2: Convert to fraction form
    18,562.45/25,615.90 = 10,064.43/x
  3. Step 3: Cross multiply
    18,562.45x = 25,615.90 × 10,064.43
  4. Step 4: Simplify right side
    18,562.45x = 257,809,432.44
  5. Step 5: Solve for x
    x = 257,809,432.44/18,562.45
  6. Step 6: Final answer
    x = 13,888.76

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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.