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Finding the Fourth Proportional to 216,758.56, 325,019.04 and 66,958.24

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Solution

The fourth proportional to 216,758.56, 325,019.04 and 66,958.24 is: 100,400.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,758.56 : 325,019.04 = 66,958.24 : x
  2. Step 2: Convert to fraction form
    216,758.56/325,019.04 = 66,958.24/x
  3. Step 3: Cross multiply
    216,758.56x = 325,019.04 × 66,958.24
  4. Step 4: Simplify right side
    216,758.56x = 21,762,702,884.89
  5. Step 5: Solve for x
    x = 21,762,702,884.89/216,758.56
  6. Step 6: Final answer
    x = 100,400.66

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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.