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Finding the Fourth Proportional to 92,474.63, 138,600.40 and 45,018.60

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Solution

The fourth proportional to 92,474.63, 138,600.40 and 45,018.60 is: 67,473.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,474.63 : 138,600.40 = 45,018.60 : x
  2. Step 2: Convert to fraction form
    92,474.63/138,600.40 = 45,018.60/x
  3. Step 3: Cross multiply
    92,474.63x = 138,600.40 × 45,018.60
  4. Step 4: Simplify right side
    92,474.63x = 6,239,595,967.44
  5. Step 5: Solve for x
    x = 6,239,595,967.44/92,474.63
  6. Step 6: Final answer
    x = 67,473.60

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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.