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Finding the Fourth Proportional to 98,796.70, 147,876.84 and 65,090.54

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Solution

The fourth proportional to 98,796.70, 147,876.84 and 65,090.54 is: 97,426.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,796.70 : 147,876.84 = 65,090.54 : x
  2. Step 2: Convert to fraction form
    98,796.70/147,876.84 = 65,090.54/x
  3. Step 3: Cross multiply
    98,796.70x = 147,876.84 × 65,090.54
  4. Step 4: Simplify right side
    98,796.70x = 9,625,383,369.09
  5. Step 5: Solve for x
    x = 9,625,383,369.09/98,796.70
  6. Step 6: Final answer
    x = 97,426.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.