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Finding the Fourth Proportional to 18,698.79, 25,804.34 and 10,740.46

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Solution

The fourth proportional to 18,698.79, 25,804.34 and 10,740.46 is: 14,821.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,698.79 : 25,804.34 = 10,740.46 : x
  2. Step 2: Convert to fraction form
    18,698.79/25,804.34 = 10,740.46/x
  3. Step 3: Cross multiply
    18,698.79x = 25,804.34 × 10,740.46
  4. Step 4: Simplify right side
    18,698.79x = 277,150,481.60
  5. Step 5: Solve for x
    x = 277,150,481.60/18,698.79
  6. Step 6: Final answer
    x = 14,821.84

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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.