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Finding the Fourth Proportional to 355,490.41, 533,127.17 and 186,919.28

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Solution

The fourth proportional to 355,490.41, 533,127.17 and 186,919.28 is: 280,321.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,490.41 : 533,127.17 = 186,919.28 : x
  2. Step 2: Convert to fraction form
    355,490.41/533,127.17 = 186,919.28/x
  3. Step 3: Cross multiply
    355,490.41x = 533,127.17 × 186,919.28
  4. Step 4: Simplify right side
    355,490.41x = 99,651,747,763.44
  5. Step 5: Solve for x
    x = 99,651,747,763.44/355,490.41
  6. Step 6: Final answer
    x = 280,321.90

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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.