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Finding the Fourth Proportional to 73,643.40, 110,351.70 and 54,835.20

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Solution

The fourth proportional to 73,643.40, 110,351.70 and 54,835.20 is: 82,168.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,643.40 : 110,351.70 = 54,835.20 : x
  2. Step 2: Convert to fraction form
    73,643.40/110,351.70 = 54,835.20/x
  3. Step 3: Cross multiply
    73,643.40x = 110,351.70 × 54,835.20
  4. Step 4: Simplify right side
    73,643.40x = 6,051,157,539.84
  5. Step 5: Solve for x
    x = 6,051,157,539.84/73,643.40
  6. Step 6: Final answer
    x = 82,168.36

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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.