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Finding the Fourth Proportional to 45,753.92, 68,628.86 and 12,473.99

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Solution

The fourth proportional to 45,753.92, 68,628.86 and 12,473.99 is: 18,710.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,753.92 : 68,628.86 = 12,473.99 : x
  2. Step 2: Convert to fraction form
    45,753.92/68,628.86 = 12,473.99/x
  3. Step 3: Cross multiply
    45,753.92x = 68,628.86 × 12,473.99
  4. Step 4: Simplify right side
    45,753.92x = 856,075,822.55
  5. Step 5: Solve for x
    x = 856,075,822.55/45,753.92
  6. Step 6: Final answer
    x = 18,710.44

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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.