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Finding the Fourth Proportional to 98,392.56, 135,783.30 and 53,680.56

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Solution

The fourth proportional to 98,392.56, 135,783.30 and 53,680.56 is: 74,080.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,392.56 : 135,783.30 = 53,680.56 : x
  2. Step 2: Convert to fraction form
    98,392.56/135,783.30 = 53,680.56/x
  3. Step 3: Cross multiply
    98,392.56x = 135,783.30 × 53,680.56
  4. Step 4: Simplify right side
    98,392.56x = 7,288,923,582.65
  5. Step 5: Solve for x
    x = 7,288,923,582.65/98,392.56
  6. Step 6: Final answer
    x = 74,080.03

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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.