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Finding the Fourth Proportional to 355,705.80, 533,519.41 and 89,466.42

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Solution

The fourth proportional to 355,705.80, 533,519.41 and 89,466.42 is: 134,189.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,705.80 : 533,519.41 = 89,466.42 : x
  2. Step 2: Convert to fraction form
    355,705.80/533,519.41 = 89,466.42/x
  3. Step 3: Cross multiply
    355,705.80x = 533,519.41 × 89,466.42
  4. Step 4: Simplify right side
    355,705.80x = 47,732,073,557.99
  5. Step 5: Solve for x
    x = 47,732,073,557.99/355,705.80
  6. Step 6: Final answer
    x = 134,189.75

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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.