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Finding the Fourth Proportional to 68,878.45, 103,343.65 and 46,899.10

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Solution

The fourth proportional to 68,878.45, 103,343.65 and 46,899.10 is: 70,366.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,878.45 : 103,343.65 = 46,899.10 : x
  2. Step 2: Convert to fraction form
    68,878.45/103,343.65 = 46,899.10/x
  3. Step 3: Cross multiply
    68,878.45x = 103,343.65 × 46,899.10
  4. Step 4: Simplify right side
    68,878.45x = 4,846,724,187.65
  5. Step 5: Solve for x
    x = 4,846,724,187.65/68,878.45
  6. Step 6: Final answer
    x = 70,366.34

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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.