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Finding the Fourth Proportional to 209,075.88, 312,033.82 and 188,897.78

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Solution

The fourth proportional to 209,075.88, 312,033.82 and 188,897.78 is: 281,919.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,075.88 : 312,033.82 = 188,897.78 : x
  2. Step 2: Convert to fraction form
    209,075.88/312,033.82 = 188,897.78/x
  3. Step 3: Cross multiply
    209,075.88x = 312,033.82 × 188,897.78
  4. Step 4: Simplify right side
    209,075.88x = 58,942,495,882.92
  5. Step 5: Solve for x
    x = 58,942,495,882.92/209,075.88
  6. Step 6: Final answer
    x = 281,919.16

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.