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Finding the Fourth Proportional to 14,698.12, 20,285.88 and 14,212.12

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Solution

The fourth proportional to 14,698.12, 20,285.88 and 14,212.12 is: 19,615.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,698.12 : 20,285.88 = 14,212.12 : x
  2. Step 2: Convert to fraction form
    14,698.12/20,285.88 = 14,212.12/x
  3. Step 3: Cross multiply
    14,698.12x = 20,285.88 × 14,212.12
  4. Step 4: Simplify right side
    14,698.12x = 288,305,360.87
  5. Step 5: Solve for x
    x = 288,305,360.87/14,698.12
  6. Step 6: Final answer
    x = 19,615.12

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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.