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Finding the Fourth Proportional to 133,685.25, 184,485.65 and 74,069.25

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Solution

The fourth proportional to 133,685.25, 184,485.65 and 74,069.25 is: 102,215.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,685.25 : 184,485.65 = 74,069.25 : x
  2. Step 2: Convert to fraction form
    133,685.25/184,485.65 = 74,069.25/x
  3. Step 3: Cross multiply
    133,685.25x = 184,485.65 × 74,069.25
  4. Step 4: Simplify right side
    133,685.25x = 13,664,713,360.92
  5. Step 5: Solve for x
    x = 13,664,713,360.92/133,685.25
  6. Step 6: Final answer
    x = 102,215.57

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.