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Finding the Fourth Proportional to 68,391.46, 102,485.13 and 55,998.46

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Solution

The fourth proportional to 68,391.46, 102,485.13 and 55,998.46 is: 83,914.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,391.46 : 102,485.13 = 55,998.46 : x
  2. Step 2: Convert to fraction form
    68,391.46/102,485.13 = 55,998.46/x
  3. Step 3: Cross multiply
    68,391.46x = 102,485.13 × 55,998.46
  4. Step 4: Simplify right side
    68,391.46x = 5,739,009,452.90
  5. Step 5: Solve for x
    x = 5,739,009,452.90/68,391.46
  6. Step 6: Final answer
    x = 83,914.12

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1.5x scale

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.