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Finding the Fourth Proportional to 74,405.92, 111,606.54 and 18,246.20

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Solution

The fourth proportional to 74,405.92, 111,606.54 and 18,246.20 is: 27,368.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,405.92 : 111,606.54 = 18,246.20 : x
  2. Step 2: Convert to fraction form
    74,405.92/111,606.54 = 18,246.20/x
  3. Step 3: Cross multiply
    74,405.92x = 111,606.54 × 18,246.20
  4. Step 4: Simplify right side
    74,405.92x = 2,036,395,250.15
  5. Step 5: Solve for x
    x = 2,036,395,250.15/74,405.92
  6. Step 6: Final answer
    x = 27,368.73

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1.5x scale

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.