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Finding the Fourth Proportional to 339,402.55, 509,166.30 and 111,710.95

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Solution

The fourth proportional to 339,402.55, 509,166.30 and 111,710.95 is: 167,586.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,402.55 : 509,166.30 = 111,710.95 : x
  2. Step 2: Convert to fraction form
    339,402.55/509,166.30 = 111,710.95/x
  3. Step 3: Cross multiply
    339,402.55x = 509,166.30 × 111,710.95
  4. Step 4: Simplify right side
    339,402.55x = 56,879,451,080.99
  5. Step 5: Solve for x
    x = 56,879,451,080.99/339,402.55
  6. Step 6: Final answer
    x = 167,586.99

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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.