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Finding the Fourth Proportional to 217,313.80, 325,970.70 and 164,825.80

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Solution

The fourth proportional to 217,313.80, 325,970.70 and 164,825.80 is: 247,238.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,313.80 : 325,970.70 = 164,825.80 : x
  2. Step 2: Convert to fraction form
    217,313.80/325,970.70 = 164,825.80/x
  3. Step 3: Cross multiply
    217,313.80x = 325,970.70 × 164,825.80
  4. Step 4: Simplify right side
    217,313.80x = 53,728,381,404.06
  5. Step 5: Solve for x
    x = 53,728,381,404.06/217,313.80
  6. Step 6: Final answer
    x = 247,238.70

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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.