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Finding the Fourth Proportional to 79,911.56, 119,830.14 and 46,641.32

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Solution

The fourth proportional to 79,911.56, 119,830.14 and 46,641.32 is: 69,940.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,911.56 : 119,830.14 = 46,641.32 : x
  2. Step 2: Convert to fraction form
    79,911.56/119,830.14 = 46,641.32/x
  3. Step 3: Cross multiply
    79,911.56x = 119,830.14 × 46,641.32
  4. Step 4: Simplify right side
    79,911.56x = 5,589,035,905.38
  5. Step 5: Solve for x
    x = 5,589,035,905.38/79,911.56
  6. Step 6: Final answer
    x = 69,940.27

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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.