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Finding the Fourth Proportional to 18,700.76, 25,807.05 and 10,633.97

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Solution

The fourth proportional to 18,700.76, 25,807.05 and 10,633.97 is: 14,674.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,700.76 : 25,807.05 = 10,633.97 : x
  2. Step 2: Convert to fraction form
    18,700.76/25,807.05 = 10,633.97/x
  3. Step 3: Cross multiply
    18,700.76x = 25,807.05 × 10,633.97
  4. Step 4: Simplify right side
    18,700.76x = 274,431,266.45
  5. Step 5: Solve for x
    x = 274,431,266.45/18,700.76
  6. Step 6: Final answer
    x = 14,674.88

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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.