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Finding the Fourth Proportional to 286,779.67, 395,760.51 and 157,723.78

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Solution

The fourth proportional to 286,779.67, 395,760.51 and 157,723.78 is: 217,661.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,779.67 : 395,760.51 = 157,723.78 : x
  2. Step 2: Convert to fraction form
    286,779.67/395,760.51 = 157,723.78/x
  3. Step 3: Cross multiply
    286,779.67x = 395,760.51 × 157,723.78
  4. Step 4: Simplify right side
    286,779.67x = 62,420,843,611.93
  5. Step 5: Solve for x
    x = 62,420,843,611.93/286,779.67
  6. Step 6: Final answer
    x = 217,661.33

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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.