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Finding the Fourth Proportional to 28,596.62, 42,892.86 and 9,621.38

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Solution

The fourth proportional to 28,596.62, 42,892.86 and 9,621.38 is: 14,431.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,596.62 : 42,892.86 = 9,621.38 : x
  2. Step 2: Convert to fraction form
    28,596.62/42,892.86 = 9,621.38/x
  3. Step 3: Cross multiply
    28,596.62x = 42,892.86 × 9,621.38
  4. Step 4: Simplify right side
    28,596.62x = 412,688,505.35
  5. Step 5: Solve for x
    x = 412,688,505.35/28,596.62
  6. Step 6: Final answer
    x = 14,431.37

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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.