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Finding the Fourth Proportional to 98,740.44, 147,766.14 and 80,763.30

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Solution

The fourth proportional to 98,740.44, 147,766.14 and 80,763.30 is: 120,863.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,740.44 : 147,766.14 = 80,763.30 : x
  2. Step 2: Convert to fraction form
    98,740.44/147,766.14 = 80,763.30/x
  3. Step 3: Cross multiply
    98,740.44x = 147,766.14 × 80,763.30
  4. Step 4: Simplify right side
    98,740.44x = 11,934,081,094.66
  5. Step 5: Solve for x
    x = 11,934,081,094.66/98,740.44
  6. Step 6: Final answer
    x = 120,863.15

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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.