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Finding the Fourth Proportional to 18,803.34, 28,160.10 and 10,462.64

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Solution

The fourth proportional to 18,803.34, 28,160.10 and 10,462.64 is: 15,668.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,803.34 : 28,160.10 = 10,462.64 : x
  2. Step 2: Convert to fraction form
    18,803.34/28,160.10 = 10,462.64/x
  3. Step 3: Cross multiply
    18,803.34x = 28,160.10 × 10,462.64
  4. Step 4: Simplify right side
    18,803.34x = 294,628,847.86
  5. Step 5: Solve for x
    x = 294,628,847.86/18,803.34
  6. Step 6: Final answer
    x = 15,668.96

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1.5x scale

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.