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Finding the Fourth Proportional to 21,636.99, 29,811.51 and 14,551.11

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Solution

The fourth proportional to 21,636.99, 29,811.51 and 14,551.11 is: 20,048.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,636.99 : 29,811.51 = 14,551.11 : x
  2. Step 2: Convert to fraction form
    21,636.99/29,811.51 = 14,551.11/x
  3. Step 3: Cross multiply
    21,636.99x = 29,811.51 × 14,551.11
  4. Step 4: Simplify right side
    21,636.99x = 433,790,561.28
  5. Step 5: Solve for x
    x = 433,790,561.28/21,636.99
  6. Step 6: Final answer
    x = 20,048.56

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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.