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Finding the Fourth Proportional to 202,985.73, 304,395.33 and 60,780.90

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Solution

The fourth proportional to 202,985.73, 304,395.33 and 60,780.90 is: 91,146.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,985.73 : 304,395.33 = 60,780.90 : x
  2. Step 2: Convert to fraction form
    202,985.73/304,395.33 = 60,780.90/x
  3. Step 3: Cross multiply
    202,985.73x = 304,395.33 × 60,780.90
  4. Step 4: Simplify right side
    202,985.73x = 18,501,422,113.20
  5. Step 5: Solve for x
    x = 18,501,422,113.20/202,985.73
  6. Step 6: Final answer
    x = 91,146.42

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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.