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Finding the Fourth Proportional to 73,063.13, 100,828.73 and 40,357.47

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Solution

The fourth proportional to 73,063.13, 100,828.73 and 40,357.47 is: 55,694.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,063.13 : 100,828.73 = 40,357.47 : x
  2. Step 2: Convert to fraction form
    73,063.13/100,828.73 = 40,357.47/x
  3. Step 3: Cross multiply
    73,063.13x = 100,828.73 × 40,357.47
  4. Step 4: Simplify right side
    73,063.13x = 4,069,192,446.11
  5. Step 5: Solve for x
    x = 4,069,192,446.11/73,063.13
  6. Step 6: Final answer
    x = 55,694.20

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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.