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Finding the Fourth Proportional to 98,090.86, 135,406.07 and 66,302.82

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Solution

The fourth proportional to 98,090.86, 135,406.07 and 66,302.82 is: 91,525.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,090.86 : 135,406.07 = 66,302.82 : x
  2. Step 2: Convert to fraction form
    98,090.86/135,406.07 = 66,302.82/x
  3. Step 3: Cross multiply
    98,090.86x = 135,406.07 × 66,302.82
  4. Step 4: Simplify right side
    98,090.86x = 8,977,804,286.12
  5. Step 5: Solve for x
    x = 8,977,804,286.12/98,090.86
  6. Step 6: Final answer
    x = 91,525.39

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.