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Finding the Fourth Proportional to 98,480.94, 135,905.31 and 53,768.94

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Solution

The fourth proportional to 98,480.94, 135,905.31 and 53,768.94 is: 74,202.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,480.94 : 135,905.31 = 53,768.94 : x
  2. Step 2: Convert to fraction form
    98,480.94/135,905.31 = 53,768.94/x
  3. Step 3: Cross multiply
    98,480.94x = 135,905.31 × 53,768.94
  4. Step 4: Simplify right side
    98,480.94x = 7,307,484,459.07
  5. Step 5: Solve for x
    x = 7,307,484,459.07/98,480.94
  6. Step 6: Final answer
    x = 74,202.02

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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.