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Finding the Fourth Proportional to 53,305.64, 79,944.50 and 15,855.64

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Solution

The fourth proportional to 53,305.64, 79,944.50 and 15,855.64 is: 23,779.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,305.64 : 79,944.50 = 15,855.64 : x
  2. Step 2: Convert to fraction form
    53,305.64/79,944.50 = 15,855.64/x
  3. Step 3: Cross multiply
    53,305.64x = 79,944.50 × 15,855.64
  4. Step 4: Simplify right side
    53,305.64x = 1,267,571,211.98
  5. Step 5: Solve for x
    x = 1,267,571,211.98/53,305.64
  6. Step 6: Final answer
    x = 23,779.31

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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.