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Finding the Fourth Proportional to 28,314.90, 42,472.49 and 8,593.56

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Solution

The fourth proportional to 28,314.90, 42,472.49 and 8,593.56 is: 12,890.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,314.90 : 42,472.49 = 8,593.56 : x
  2. Step 2: Convert to fraction form
    28,314.90/42,472.49 = 8,593.56/x
  3. Step 3: Cross multiply
    28,314.90x = 42,472.49 × 8,593.56
  4. Step 4: Simplify right side
    28,314.90x = 364,989,848.20
  5. Step 5: Solve for x
    x = 364,989,848.20/28,314.90
  6. Step 6: Final answer
    x = 12,890.38

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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.