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Finding the Fourth Proportional to 55,643.49, 76,745.64 and 47,895.49

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Solution

The fourth proportional to 55,643.49, 76,745.64 and 47,895.49 is: 66,059.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,643.49 : 76,745.64 = 47,895.49 : x
  2. Step 2: Convert to fraction form
    55,643.49/76,745.64 = 47,895.49/x
  3. Step 3: Cross multiply
    55,643.49x = 76,745.64 × 47,895.49
  4. Step 4: Simplify right side
    55,643.49x = 3,675,770,033.16
  5. Step 5: Solve for x
    x = 3,675,770,033.16/55,643.49
  6. Step 6: Final answer
    x = 66,059.30

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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.