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Finding the Fourth Proportional to 101,893.87, 140,515.82 and 65,558.23

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Solution

The fourth proportional to 101,893.87, 140,515.82 and 65,558.23 is: 90,407.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,893.87 : 140,515.82 = 65,558.23 : x
  2. Step 2: Convert to fraction form
    101,893.87/140,515.82 = 65,558.23/x
  3. Step 3: Cross multiply
    101,893.87x = 140,515.82 × 65,558.23
  4. Step 4: Simplify right side
    101,893.87x = 9,211,968,446.20
  5. Step 5: Solve for x
    x = 9,211,968,446.20/101,893.87
  6. Step 6: Final answer
    x = 90,407.48

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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.