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Finding the Fourth Proportional to 14,698.70, 20,276.43 and 9,311.63

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Solution

The fourth proportional to 14,698.70, 20,276.43 and 9,311.63 is: 12,845.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,698.70 : 20,276.43 = 9,311.63 : x
  2. Step 2: Convert to fraction form
    14,698.70/20,276.43 = 9,311.63/x
  3. Step 3: Cross multiply
    14,698.70x = 20,276.43 × 9,311.63
  4. Step 4: Simplify right side
    14,698.70x = 188,806,590.60
  5. Step 5: Solve for x
    x = 188,806,590.60/14,698.70
  6. Step 6: Final answer
    x = 12,845.12

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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.