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Finding the Fourth Proportional to 18,623.84, 25,700.64 and 10,240.88

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Solution

The fourth proportional to 18,623.84, 25,700.64 and 10,240.88 is: 14,132.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,623.84 : 25,700.64 = 10,240.88 : x
  2. Step 2: Convert to fraction form
    18,623.84/25,700.64 = 10,240.88/x
  3. Step 3: Cross multiply
    18,623.84x = 25,700.64 × 10,240.88
  4. Step 4: Simplify right side
    18,623.84x = 263,197,170.16
  5. Step 5: Solve for x
    x = 263,197,170.16/18,623.84
  6. Step 6: Final answer
    x = 14,132.27

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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.