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Finding the Fourth Proportional to 92,009.20, 137,940.90 and 50,456.20

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Solution

The fourth proportional to 92,009.20, 137,940.90 and 50,456.20 is: 75,644.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,009.20 : 137,940.90 = 50,456.20 : x
  2. Step 2: Convert to fraction form
    92,009.20/137,940.90 = 50,456.20/x
  3. Step 3: Cross multiply
    92,009.20x = 137,940.90 × 50,456.20
  4. Step 4: Simplify right side
    92,009.20x = 6,959,973,638.58
  5. Step 5: Solve for x
    x = 6,959,973,638.58/92,009.20
  6. Step 6: Final answer
    x = 75,644.32

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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.