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Finding the Fourth Proportional to 68,472.70, 94,483.65 and 40,168.06

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Solution

The fourth proportional to 68,472.70, 94,483.65 and 40,168.06 is: 55,426.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,472.70 : 94,483.65 = 40,168.06 : x
  2. Step 2: Convert to fraction form
    68,472.70/94,483.65 = 40,168.06/x
  3. Step 3: Cross multiply
    68,472.70x = 94,483.65 × 40,168.06
  4. Step 4: Simplify right side
    68,472.70x = 3,795,224,957.59
  5. Step 5: Solve for x
    x = 3,795,224,957.59/68,472.70
  6. Step 6: Final answer
    x = 55,426.83

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.