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Finding the Fourth Proportional to 51,305.68, 70,804.98 and 28,644.64

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Solution

The fourth proportional to 51,305.68, 70,804.98 and 28,644.64 is: 39,531.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,305.68 : 70,804.98 = 28,644.64 : x
  2. Step 2: Convert to fraction form
    51,305.68/70,804.98 = 28,644.64/x
  3. Step 3: Cross multiply
    51,305.68x = 70,804.98 × 28,644.64
  4. Step 4: Simplify right side
    51,305.68x = 2,028,183,162.31
  5. Step 5: Solve for x
    x = 2,028,183,162.31/51,305.68
  6. Step 6: Final answer
    x = 39,531.36

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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.