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Finding the Fourth Proportional to 14,675.99, 20,252.86 and 7,961.63

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Solution

The fourth proportional to 14,675.99, 20,252.86 and 7,961.63 is: 10,987.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,675.99 : 20,252.86 = 7,961.63 : x
  2. Step 2: Convert to fraction form
    14,675.99/20,252.86 = 7,961.63/x
  3. Step 3: Cross multiply
    14,675.99x = 20,252.86 × 7,961.63
  4. Step 4: Simplify right side
    14,675.99x = 161,245,808.49
  5. Step 5: Solve for x
    x = 161,245,808.49/14,675.99
  6. Step 6: Final answer
    x = 10,987.05

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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.