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Finding the Fourth Proportional to 98,296.66, 135,695.06 and 74,107.42

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Solution

The fourth proportional to 98,296.66, 135,695.06 and 74,107.42 is: 102,302.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,296.66 : 135,695.06 = 74,107.42 : x
  2. Step 2: Convert to fraction form
    98,296.66/135,695.06 = 74,107.42/x
  3. Step 3: Cross multiply
    98,296.66x = 135,695.06 × 74,107.42
  4. Step 4: Simplify right side
    98,296.66x = 10,056,010,788.33
  5. Step 5: Solve for x
    x = 10,056,010,788.33/98,296.66
  6. Step 6: Final answer
    x = 102,302.67

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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.