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Finding the Fourth Proportional to 18,810.66, 25,958.61 and 10,313.16

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Solution

The fourth proportional to 18,810.66, 25,958.61 and 10,313.16 is: 14,232.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,810.66 : 25,958.61 = 10,313.16 : x
  2. Step 2: Convert to fraction form
    18,810.66/25,958.61 = 10,313.16/x
  3. Step 3: Cross multiply
    18,810.66x = 25,958.61 × 10,313.16
  4. Step 4: Simplify right side
    18,810.66x = 267,715,200.96
  5. Step 5: Solve for x
    x = 267,715,200.96/18,810.66
  6. Step 6: Final answer
    x = 14,232.10

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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.