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Finding the Fourth Proportional to 217,047.47, 325,583.51 and 67,309.05

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Solution

The fourth proportional to 217,047.47, 325,583.51 and 67,309.05 is: 100,967.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,047.47 : 325,583.51 = 67,309.05 : x
  2. Step 2: Convert to fraction form
    217,047.47/325,583.51 = 67,309.05/x
  3. Step 3: Cross multiply
    217,047.47x = 325,583.51 × 67,309.05
  4. Step 4: Simplify right side
    217,047.47x = 21,914,715,932.96
  5. Step 5: Solve for x
    x = 21,914,715,932.96/217,047.47
  6. Step 6: Final answer
    x = 100,967.39

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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.