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Finding the Fourth Proportional to 68,903.19, 103,223.30 and 46,678.41

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Solution

The fourth proportional to 68,903.19, 103,223.30 and 46,678.41 is: 69,928.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,903.19 : 103,223.30 = 46,678.41 : x
  2. Step 2: Convert to fraction form
    68,903.19/103,223.30 = 46,678.41/x
  3. Step 3: Cross multiply
    68,903.19x = 103,223.30 × 46,678.41
  4. Step 4: Simplify right side
    68,903.19x = 4,818,299,285.56
  5. Step 5: Solve for x
    x = 4,818,299,285.56/68,903.19
  6. Step 6: Final answer
    x = 69,928.54

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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.