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Finding the Fourth Proportional to 14,909.83, 20,576.64 and 8,941.39

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Solution

The fourth proportional to 14,909.83, 20,576.64 and 8,941.39 is: 12,339.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,909.83 : 20,576.64 = 8,941.39 : x
  2. Step 2: Convert to fraction form
    14,909.83/20,576.64 = 8,941.39/x
  3. Step 3: Cross multiply
    14,909.83x = 20,576.64 × 8,941.39
  4. Step 4: Simplify right side
    14,909.83x = 183,983,763.13
  5. Step 5: Solve for x
    x = 183,983,763.13/14,909.83
  6. Step 6: Final answer
    x = 12,339.76

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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.