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Finding the Fourth Proportional to 98,175.93, 135,480.83 and 57,891.39

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Solution

The fourth proportional to 98,175.93, 135,480.83 and 57,891.39 is: 79,888.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,175.93 : 135,480.83 = 57,891.39 : x
  2. Step 2: Convert to fraction form
    98,175.93/135,480.83 = 57,891.39/x
  3. Step 3: Cross multiply
    98,175.93x = 135,480.83 × 57,891.39
  4. Step 4: Simplify right side
    98,175.93x = 7,843,173,567.05
  5. Step 5: Solve for x
    x = 7,843,173,567.05/98,175.93
  6. Step 6: Final answer
    x = 79,888.97

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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.