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Finding the Fourth Proportional to 69,091.37, 103,098.19 and 61,644.63

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Solution

The fourth proportional to 69,091.37, 103,098.19 and 61,644.63 is: 91,986.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,091.37 : 103,098.19 = 61,644.63 : x
  2. Step 2: Convert to fraction form
    69,091.37/103,098.19 = 61,644.63/x
  3. Step 3: Cross multiply
    69,091.37x = 103,098.19 × 61,644.63
  4. Step 4: Simplify right side
    69,091.37x = 6,355,449,776.22
  5. Step 5: Solve for x
    x = 6,355,449,776.22/69,091.37
  6. Step 6: Final answer
    x = 91,986.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.