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Finding the Fourth Proportional to 168,038.40, 231,890.40 and 92,589.60

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Solution

The fourth proportional to 168,038.40, 231,890.40 and 92,589.60 is: 127,772.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,038.40 : 231,890.40 = 92,589.60 : x
  2. Step 2: Convert to fraction form
    168,038.40/231,890.40 = 92,589.60/x
  3. Step 3: Cross multiply
    168,038.40x = 231,890.40 × 92,589.60
  4. Step 4: Simplify right side
    168,038.40x = 21,470,639,379.84
  5. Step 5: Solve for x
    x = 21,470,639,379.84/168,038.40
  6. Step 6: Final answer
    x = 127,772.22

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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.