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Finding the Fourth Proportional to 74,293.52, 111,438.84 and 18,134

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Solution

The fourth proportional to 74,293.52, 111,438.84 and 18,134 is: 27,200.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,293.52 : 111,438.84 = 18,134 : x
  2. Step 2: Convert to fraction form
    74,293.52/111,438.84 = 18,134/x
  3. Step 3: Cross multiply
    74,293.52x = 111,438.84 × 18,134
  4. Step 4: Simplify right side
    74,293.52x = 2,020,831,924.56
  5. Step 5: Solve for x
    x = 2,020,831,924.56/74,293.52
  6. Step 6: Final answer
    x = 27,200.65

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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.