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Finding the Fourth Proportional to 14,004.55, 20,957.46 and 8,742.03

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Solution

The fourth proportional to 14,004.55, 20,957.46 and 8,742.03 is: 13,082.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,004.55 : 20,957.46 = 8,742.03 : x
  2. Step 2: Convert to fraction form
    14,004.55/20,957.46 = 8,742.03/x
  3. Step 3: Cross multiply
    14,004.55x = 20,957.46 × 8,742.03
  4. Step 4: Simplify right side
    14,004.55x = 183,210,632.67
  5. Step 5: Solve for x
    x = 183,210,632.67/14,004.55
  6. Step 6: Final answer
    x = 13,082.23

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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.