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Finding the Fourth Proportional to 280,959.72, 421,351.62 and 93,927.48

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Solution

The fourth proportional to 280,959.72, 421,351.62 and 93,927.48 is: 140,861.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,959.72 : 421,351.62 = 93,927.48 : x
  2. Step 2: Convert to fraction form
    280,959.72/421,351.62 = 93,927.48/x
  3. Step 3: Cross multiply
    280,959.72x = 421,351.62 × 93,927.48
  4. Step 4: Simplify right side
    280,959.72x = 39,576,495,860.52
  5. Step 5: Solve for x
    x = 39,576,495,860.52/280,959.72
  6. Step 6: Final answer
    x = 140,861.81

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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.