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Finding the Fourth Proportional to 18,563.16, 25,617.96 and 10,605.99

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Solution

The fourth proportional to 18,563.16, 25,617.96 and 10,605.99 is: 14,636.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,563.16 : 25,617.96 = 10,605.99 : x
  2. Step 2: Convert to fraction form
    18,563.16/25,617.96 = 10,605.99/x
  3. Step 3: Cross multiply
    18,563.16x = 25,617.96 × 10,605.99
  4. Step 4: Simplify right side
    18,563.16x = 271,703,827.58
  5. Step 5: Solve for x
    x = 271,703,827.58/18,563.16
  6. Step 6: Final answer
    x = 14,636.72

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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.