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Finding the Fourth Proportional to 339,905.70, 469,075.59 and 186,950.70

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Solution

The fourth proportional to 339,905.70, 469,075.59 and 186,950.70 is: 257,995.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,905.70 : 469,075.59 = 186,950.70 : x
  2. Step 2: Convert to fraction form
    339,905.70/469,075.59 = 186,950.70/x
  3. Step 3: Cross multiply
    339,905.70x = 469,075.59 × 186,950.70
  4. Step 4: Simplify right side
    339,905.70x = 87,694,009,903.41
  5. Step 5: Solve for x
    x = 87,694,009,903.41/339,905.70
  6. Step 6: Final answer
    x = 257,995.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.