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Finding the Fourth Proportional to 103,807.23, 155,710.94 and 28,927.59

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Solution

The fourth proportional to 103,807.23, 155,710.94 and 28,927.59 is: 43,391.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,807.23 : 155,710.94 = 28,927.59 : x
  2. Step 2: Convert to fraction form
    103,807.23/155,710.94 = 28,927.59/x
  3. Step 3: Cross multiply
    103,807.23x = 155,710.94 × 28,927.59
  4. Step 4: Simplify right side
    103,807.23x = 4,504,342,230.83
  5. Step 5: Solve for x
    x = 4,504,342,230.83/103,807.23
  6. Step 6: Final answer
    x = 43,391.41

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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.