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Finding the Fourth Proportional to 612,685.27, 845,683.73 and 408,735.69

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Solution

The fourth proportional to 612,685.27, 845,683.73 and 408,735.69 is: 564,174.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,685.27 : 845,683.73 = 408,735.69 : x
  2. Step 2: Convert to fraction form
    612,685.27/845,683.73 = 408,735.69/x
  3. Step 3: Cross multiply
    612,685.27x = 845,683.73 × 408,735.69
  4. Step 4: Simplify right side
    612,685.27x = 345,661,120,859.65
  5. Step 5: Solve for x
    x = 345,661,120,859.65/612,685.27
  6. Step 6: Final answer
    x = 564,174.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.