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Finding the Fourth Proportional to 123,338.93, 185,008.43 and 43,435.90

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Solution

The fourth proportional to 123,338.93, 185,008.43 and 43,435.90 is: 65,153.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,338.93 : 185,008.43 = 43,435.90 : x
  2. Step 2: Convert to fraction form
    123,338.93/185,008.43 = 43,435.90/x
  3. Step 3: Cross multiply
    123,338.93x = 185,008.43 × 43,435.90
  4. Step 4: Simplify right side
    123,338.93x = 8,036,006,841.65
  5. Step 5: Solve for x
    x = 8,036,006,841.65/123,338.93
  6. Step 6: Final answer
    x = 65,153.86

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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.