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Finding the Fourth Proportional to 103,779.54, 155,691.16 and 33,653.38

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Solution

The fourth proportional to 103,779.54, 155,691.16 and 33,653.38 is: 50,487.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,779.54 : 155,691.16 = 33,653.38 : x
  2. Step 2: Convert to fraction form
    103,779.54/155,691.16 = 33,653.38/x
  3. Step 3: Cross multiply
    103,779.54x = 155,691.16 × 33,653.38
  4. Step 4: Simplify right side
    103,779.54x = 5,239,533,770.12
  5. Step 5: Solve for x
    x = 5,239,533,770.12/103,779.54
  6. Step 6: Final answer
    x = 50,487.16

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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.