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Finding the Fourth Proportional to 73,130.91, 100,919.40 and 40,866.03

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Solution

The fourth proportional to 73,130.91, 100,919.40 and 40,866.03 is: 56,394.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,130.91 : 100,919.40 = 40,866.03 : x
  2. Step 2: Convert to fraction form
    73,130.91/100,919.40 = 40,866.03/x
  3. Step 3: Cross multiply
    73,130.91x = 100,919.40 × 40,866.03
  4. Step 4: Simplify right side
    73,130.91x = 4,124,175,227.98
  5. Step 5: Solve for x
    x = 4,124,175,227.98/73,130.91
  6. Step 6: Final answer
    x = 56,394.42

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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.