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Finding the Fourth Proportional to 18,709.84, 25,820.16 and 10,753.68

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Solution

The fourth proportional to 18,709.84, 25,820.16 and 10,753.68 is: 14,840.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,709.84 : 25,820.16 = 10,753.68 : x
  2. Step 2: Convert to fraction form
    18,709.84/25,820.16 = 10,753.68/x
  3. Step 3: Cross multiply
    18,709.84x = 25,820.16 × 10,753.68
  4. Step 4: Simplify right side
    18,709.84x = 277,661,738.19
  5. Step 5: Solve for x
    x = 277,661,738.19/18,709.84
  6. Step 6: Final answer
    x = 14,840.41

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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.