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Finding the Fourth Proportional to 98,448.20, 135,858.48 and 53,736.20

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Solution

The fourth proportional to 98,448.20, 135,858.48 and 53,736.20 is: 74,155.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,448.20 : 135,858.48 = 53,736.20 : x
  2. Step 2: Convert to fraction form
    98,448.20/135,858.48 = 53,736.20/x
  3. Step 3: Cross multiply
    98,448.20x = 135,858.48 × 53,736.20
  4. Step 4: Simplify right side
    98,448.20x = 7,300,518,452.98
  5. Step 5: Solve for x
    x = 7,300,518,452.98/98,448.20
  6. Step 6: Final answer
    x = 74,155.94

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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.