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Finding the Fourth Proportional to 73,116.56, 100,900.80 and 39,582.56

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Solution

The fourth proportional to 73,116.56, 100,900.80 and 39,582.56 is: 54,623.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,116.56 : 100,900.80 = 39,582.56 : x
  2. Step 2: Convert to fraction form
    73,116.56/100,900.80 = 39,582.56/x
  3. Step 3: Cross multiply
    73,116.56x = 100,900.80 × 39,582.56
  4. Step 4: Simplify right side
    73,116.56x = 3,993,911,970.05
  5. Step 5: Solve for x
    x = 3,993,911,970.05/73,116.56
  6. Step 6: Final answer
    x = 54,623.90

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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.