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Finding the Fourth Proportional to 73,230.57, 109,720.47 and 39,973.98

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Solution

The fourth proportional to 73,230.57, 109,720.47 and 39,973.98 is: 59,892.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,230.57 : 109,720.47 = 39,973.98 : x
  2. Step 2: Convert to fraction form
    73,230.57/109,720.47 = 39,973.98/x
  3. Step 3: Cross multiply
    73,230.57x = 109,720.47 × 39,973.98
  4. Step 4: Simplify right side
    73,230.57x = 4,385,963,873.37
  5. Step 5: Solve for x
    x = 4,385,963,873.37/73,230.57
  6. Step 6: Final answer
    x = 59,892.53

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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.