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Finding the Fourth Proportional to 73,157.76, 100,958.16 and 39,623.76

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Solution

The fourth proportional to 73,157.76, 100,958.16 and 39,623.76 is: 54,681.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,157.76 : 100,958.16 = 39,623.76 : x
  2. Step 2: Convert to fraction form
    73,157.76/100,958.16 = 39,623.76/x
  3. Step 3: Cross multiply
    73,157.76x = 100,958.16 × 39,623.76
  4. Step 4: Simplify right side
    73,157.76x = 4,000,341,901.88
  5. Step 5: Solve for x
    x = 4,000,341,901.88/73,157.76
  6. Step 6: Final answer
    x = 54,681.03

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.