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Finding the Fourth Proportional to 104,180.44, 143,739.84 and 65,422.44

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Solution

The fourth proportional to 104,180.44, 143,739.84 and 65,422.44 is: 90,264.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,180.44 : 143,739.84 = 65,422.44 : x
  2. Step 2: Convert to fraction form
    104,180.44/143,739.84 = 65,422.44/x
  3. Step 3: Cross multiply
    104,180.44x = 143,739.84 × 65,422.44
  4. Step 4: Simplify right side
    104,180.44x = 9,403,810,730.90
  5. Step 5: Solve for x
    x = 9,403,810,730.90/104,180.44
  6. Step 6: Final answer
    x = 90,264.65

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1.5x scale

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.