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Finding the Fourth Proportional to 43,242.91, 64,866.67 and 40,876.34

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Solution

The fourth proportional to 43,242.91, 64,866.67 and 40,876.34 is: 61,316.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,242.91 : 64,866.67 = 40,876.34 : x
  2. Step 2: Convert to fraction form
    43,242.91/64,866.67 = 40,876.34/x
  3. Step 3: Cross multiply
    43,242.91x = 64,866.67 × 40,876.34
  4. Step 4: Simplify right side
    43,242.91x = 2,651,511,928.47
  5. Step 5: Solve for x
    x = 2,651,511,928.47/43,242.91
  6. Step 6: Final answer
    x = 61,316.69

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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.