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Finding the Fourth Proportional to 339,400.55, 509,163.30 and 111,708.95

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Solution

The fourth proportional to 339,400.55, 509,163.30 and 111,708.95 is: 167,583.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,400.55 : 509,163.30 = 111,708.95 : x
  2. Step 2: Convert to fraction form
    339,400.55/509,163.30 = 111,708.95/x
  3. Step 3: Cross multiply
    339,400.55x = 509,163.30 × 111,708.95
  4. Step 4: Simplify right side
    339,400.55x = 56,878,095,075.72
  5. Step 5: Solve for x
    x = 56,878,095,075.72/339,400.55
  6. Step 6: Final answer
    x = 167,583.98

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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.