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Finding the Fourth Proportional to 455,861.85, 683,821.95 and 175,379.10

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Solution

The fourth proportional to 455,861.85, 683,821.95 and 175,379.10 is: 263,079.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,861.85 : 683,821.95 = 175,379.10 : x
  2. Step 2: Convert to fraction form
    455,861.85/683,821.95 = 175,379.10/x
  3. Step 3: Cross multiply
    455,861.85x = 683,821.95 × 175,379.10
  4. Step 4: Simplify right side
    455,861.85x = 119,928,078,151.25
  5. Step 5: Solve for x
    x = 119,928,078,151.25/455,861.85
  6. Step 6: Final answer
    x = 263,079.87

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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.