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Finding the Fourth Proportional to 217,040.80, 325,868.40 and 170,346.40

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Solution

The fourth proportional to 217,040.80, 325,868.40 and 170,346.40 is: 255,760.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,040.80 : 325,868.40 = 170,346.40 : x
  2. Step 2: Convert to fraction form
    217,040.80/325,868.40 = 170,346.40/x
  3. Step 3: Cross multiply
    217,040.80x = 325,868.40 × 170,346.40
  4. Step 4: Simplify right side
    217,040.80x = 55,510,508,813.76
  5. Step 5: Solve for x
    x = 55,510,508,813.76/217,040.80
  6. Step 6: Final answer
    x = 255,760.71

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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.