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Finding the Fourth Proportional to 137,420.90, 206,093.07 and 48,650.57

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Solution

The fourth proportional to 137,420.90, 206,093.07 and 48,650.57 is: 72,962.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,420.90 : 206,093.07 = 48,650.57 : x
  2. Step 2: Convert to fraction form
    137,420.90/206,093.07 = 48,650.57/x
  3. Step 3: Cross multiply
    137,420.90x = 206,093.07 × 48,650.57
  4. Step 4: Simplify right side
    137,420.90x = 10,026,544,298.08
  5. Step 5: Solve for x
    x = 10,026,544,298.08/137,420.90
  6. Step 6: Final answer
    x = 72,962.30

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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.