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Finding the Fourth Proportional to 28,615.72, 42,926.46 and 10,608.82

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Solution

The fourth proportional to 28,615.72, 42,926.46 and 10,608.82 is: 15,914.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,615.72 : 42,926.46 = 10,608.82 : x
  2. Step 2: Convert to fraction form
    28,615.72/42,926.46 = 10,608.82/x
  3. Step 3: Cross multiply
    28,615.72x = 42,926.46 × 10,608.82
  4. Step 4: Simplify right side
    28,615.72x = 455,399,087.38
  5. Step 5: Solve for x
    x = 455,399,087.38/28,615.72
  6. Step 6: Final answer
    x = 15,914.30

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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.