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Finding the Fourth Proportional to 403,969.89, 605,889.20 and 190,737.39

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Solution

The fourth proportional to 403,969.89, 605,889.20 and 190,737.39 is: 286,075.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,969.89 : 605,889.20 = 190,737.39 : x
  2. Step 2: Convert to fraction form
    403,969.89/605,889.20 = 190,737.39/x
  3. Step 3: Cross multiply
    403,969.89x = 605,889.20 × 190,737.39
  4. Step 4: Simplify right side
    403,969.89x = 115,565,722,841.95
  5. Step 5: Solve for x
    x = 115,565,722,841.95/403,969.89
  6. Step 6: Final answer
    x = 286,075.09

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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.