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Finding the Fourth Proportional to 45,963.90, 68,937.63 and 12,230.11

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Solution

The fourth proportional to 45,963.90, 68,937.63 and 12,230.11 is: 18,342.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,963.90 : 68,937.63 = 12,230.11 : x
  2. Step 2: Convert to fraction form
    45,963.90/68,937.63 = 12,230.11/x
  3. Step 3: Cross multiply
    45,963.90x = 68,937.63 × 12,230.11
  4. Step 4: Simplify right side
    45,963.90x = 843,114,798.04
  5. Step 5: Solve for x
    x = 843,114,798.04/45,963.90
  6. Step 6: Final answer
    x = 18,342.98

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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.