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Finding the Fourth Proportional to 98,550.12, 135,999.12 and 53,838.12

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Solution

The fourth proportional to 98,550.12, 135,999.12 and 53,838.12 is: 74,296.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,550.12 : 135,999.12 = 53,838.12 : x
  2. Step 2: Convert to fraction form
    98,550.12/135,999.12 = 53,838.12/x
  3. Step 3: Cross multiply
    98,550.12x = 135,999.12 × 53,838.12
  4. Step 4: Simplify right side
    98,550.12x = 7,321,936,942.45
  5. Step 5: Solve for x
    x = 7,321,936,942.45/98,550.12
  6. Step 6: Final answer
    x = 74,296.58

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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.