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Finding the Fourth Proportional to 65,739.80, 98,436.90 and 48,114.20

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Solution

The fourth proportional to 65,739.80, 98,436.90 and 48,114.20 is: 72,044.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,739.80 : 98,436.90 = 48,114.20 : x
  2. Step 2: Convert to fraction form
    65,739.80/98,436.90 = 48,114.20/x
  3. Step 3: Cross multiply
    65,739.80x = 98,436.90 × 48,114.20
  4. Step 4: Simplify right side
    65,739.80x = 4,736,212,693.98
  5. Step 5: Solve for x
    x = 4,736,212,693.98/65,739.80
  6. Step 6: Final answer
    x = 72,044.83

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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.