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Finding the Fourth Proportional to 43,341.90, 65,012.49 and 11,751.90

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Solution

The fourth proportional to 43,341.90, 65,012.49 and 11,751.90 is: 17,627.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,341.90 : 65,012.49 = 11,751.90 : x
  2. Step 2: Convert to fraction form
    43,341.90/65,012.49 = 11,751.90/x
  3. Step 3: Cross multiply
    43,341.90x = 65,012.49 × 11,751.90
  4. Step 4: Simplify right side
    43,341.90x = 764,020,281.23
  5. Step 5: Solve for x
    x = 764,020,281.23/43,341.90
  6. Step 6: Final answer
    x = 17,627.75

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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.