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Finding the Fourth Proportional to 48,390.60, 66,774.42 and 27,165

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Solution

The fourth proportional to 48,390.60, 66,774.42 and 27,165 is: 37,485.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,390.60 : 66,774.42 = 27,165 : x
  2. Step 2: Convert to fraction form
    48,390.60/66,774.42 = 27,165/x
  3. Step 3: Cross multiply
    48,390.60x = 66,774.42 × 27,165
  4. Step 4: Simplify right side
    48,390.60x = 1,813,927,119.30
  5. Step 5: Solve for x
    x = 1,813,927,119.30/48,390.60
  6. Step 6: Final answer
    x = 37,485.11

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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.