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Finding the Fourth Proportional to 28,313.76, 42,468.46 and 8,592.42

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Solution

The fourth proportional to 28,313.76, 42,468.46 and 8,592.42 is: 12,887.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,313.76 : 42,468.46 = 8,592.42 : x
  2. Step 2: Convert to fraction form
    28,313.76/42,468.46 = 8,592.42/x
  3. Step 3: Cross multiply
    28,313.76x = 42,468.46 × 8,592.42
  4. Step 4: Simplify right side
    28,313.76x = 364,906,845.07
  5. Step 5: Solve for x
    x = 364,906,845.07/28,313.76
  6. Step 6: Final answer
    x = 12,887.97

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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.