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Finding the Fourth Proportional to 55,399.80, 83,099.70 and 46,651.80

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Solution

The fourth proportional to 55,399.80, 83,099.70 and 46,651.80 is: 69,977.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,399.80 : 83,099.70 = 46,651.80 : x
  2. Step 2: Convert to fraction form
    55,399.80/83,099.70 = 46,651.80/x
  3. Step 3: Cross multiply
    55,399.80x = 83,099.70 × 46,651.80
  4. Step 4: Simplify right side
    55,399.80x = 3,876,750,584.46
  5. Step 5: Solve for x
    x = 3,876,750,584.46/55,399.80
  6. Step 6: Final answer
    x = 69,977.70

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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.