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Finding the Fourth Proportional to 66,643.50, 99,583.23 and 50,760.30

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Solution

The fourth proportional to 66,643.50, 99,583.23 and 50,760.30 is: 75,849.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,643.50 : 99,583.23 = 50,760.30 : x
  2. Step 2: Convert to fraction form
    66,643.50/99,583.23 = 50,760.30/x
  3. Step 3: Cross multiply
    66,643.50x = 99,583.23 × 50,760.30
  4. Step 4: Simplify right side
    66,643.50x = 5,054,874,629.77
  5. Step 5: Solve for x
    x = 5,054,874,629.77/66,643.50
  6. Step 6: Final answer
    x = 75,849.48

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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.