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Finding the Fourth Proportional to 65,693.52, 98,554.86 and 18,942.78

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Solution

The fourth proportional to 65,693.52, 98,554.86 and 18,942.78 is: 28,418.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,693.52 : 98,554.86 = 18,942.78 : x
  2. Step 2: Convert to fraction form
    65,693.52/98,554.86 = 18,942.78/x
  3. Step 3: Cross multiply
    65,693.52x = 98,554.86 × 18,942.78
  4. Step 4: Simplify right side
    65,693.52x = 1,866,903,030.91
  5. Step 5: Solve for x
    x = 1,866,903,030.91/65,693.52
  6. Step 6: Final answer
    x = 28,418.37

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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.