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Finding the Fourth Proportional to 48,779.49, 73,169.28 and 13,719.16

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Solution

The fourth proportional to 48,779.49, 73,169.28 and 13,719.16 is: 20,578.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,779.49 : 73,169.28 = 13,719.16 : x
  2. Step 2: Convert to fraction form
    48,779.49/73,169.28 = 13,719.16/x
  3. Step 3: Cross multiply
    48,779.49x = 73,169.28 × 13,719.16
  4. Step 4: Simplify right side
    48,779.49x = 1,003,821,059.40
  5. Step 5: Solve for x
    x = 1,003,821,059.40/48,779.49
  6. Step 6: Final answer
    x = 20,578.75

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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.