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Finding the Fourth Proportional to 98,891.61, 136,469.61 and 53,568.54

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Solution

The fourth proportional to 98,891.61, 136,469.61 and 53,568.54 is: 73,924.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,891.61 : 136,469.61 = 53,568.54 : x
  2. Step 2: Convert to fraction form
    98,891.61/136,469.61 = 53,568.54/x
  3. Step 3: Cross multiply
    98,891.61x = 136,469.61 × 53,568.54
  4. Step 4: Simplify right side
    98,891.61x = 7,310,477,762.07
  5. Step 5: Solve for x
    x = 7,310,477,762.07/98,891.61
  6. Step 6: Final answer
    x = 73,924.15

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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.