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Finding the Fourth Proportional to 63,779.80, 95,669.66 and 28,678.44

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Solution

The fourth proportional to 63,779.80, 95,669.66 and 28,678.44 is: 43,017.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,779.80 : 95,669.66 = 28,678.44 : x
  2. Step 2: Convert to fraction form
    63,779.80/95,669.66 = 28,678.44/x
  3. Step 3: Cross multiply
    63,779.80x = 95,669.66 × 28,678.44
  4. Step 4: Simplify right side
    63,779.80x = 2,743,656,604.13
  5. Step 5: Solve for x
    x = 2,743,656,604.13/63,779.80
  6. Step 6: Final answer
    x = 43,017.64

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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.