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Finding the Fourth Proportional to 611,961.80, 918,072.30 and 185,462.60

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Solution

The fourth proportional to 611,961.80, 918,072.30 and 185,462.60 is: 278,233.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,961.80 : 918,072.30 = 185,462.60 : x
  2. Step 2: Convert to fraction form
    611,961.80/918,072.30 = 185,462.60/x
  3. Step 3: Cross multiply
    611,961.80x = 918,072.30 × 185,462.60
  4. Step 4: Simplify right side
    611,961.80x = 170,268,075,745.98
  5. Step 5: Solve for x
    x = 170,268,075,745.98/611,961.80
  6. Step 6: Final answer
    x = 278,233.18

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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.