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Finding the Fourth Proportional to 68,483.40, 102,722.94 and 40,594.56

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Solution

The fourth proportional to 68,483.40, 102,722.94 and 40,594.56 is: 60,890.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,483.40 : 102,722.94 = 40,594.56 : x
  2. Step 2: Convert to fraction form
    68,483.40/102,722.94 = 40,594.56/x
  3. Step 3: Cross multiply
    68,483.40x = 102,722.94 × 40,594.56
  4. Step 4: Simplify right side
    68,483.40x = 4,169,992,551.21
  5. Step 5: Solve for x
    x = 4,169,992,551.21/68,483.40
  6. Step 6: Final answer
    x = 60,890.56

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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.