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Finding the Fourth Proportional to 79,389.79, 119,046.41 and 46,119.38

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Solution

The fourth proportional to 79,389.79, 119,046.41 and 46,119.38 is: 69,156.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,389.79 : 119,046.41 = 46,119.38 : x
  2. Step 2: Convert to fraction form
    79,389.79/119,046.41 = 46,119.38/x
  3. Step 3: Cross multiply
    79,389.79x = 119,046.41 × 46,119.38
  4. Step 4: Simplify right side
    79,389.79x = 5,490,345,967.54
  5. Step 5: Solve for x
    x = 5,490,345,967.54/79,389.79
  6. Step 6: Final answer
    x = 69,156.83

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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.