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Finding the Fourth Proportional to 98,260.92, 135,587.39 and 55,811.25

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Solution

The fourth proportional to 98,260.92, 135,587.39 and 55,811.25 is: 77,012.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,260.92 : 135,587.39 = 55,811.25 : x
  2. Step 2: Convert to fraction form
    98,260.92/135,587.39 = 55,811.25/x
  3. Step 3: Cross multiply
    98,260.92x = 135,587.39 × 55,811.25
  4. Step 4: Simplify right side
    98,260.92x = 7,567,301,441.08
  5. Step 5: Solve for x
    x = 7,567,301,441.08/98,260.92
  6. Step 6: Final answer
    x = 77,012.32

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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.