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Finding the Fourth Proportional to 193,718.99, 290,590.79 and 51,561.94

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Solution

The fourth proportional to 193,718.99, 290,590.79 and 51,561.94 is: 77,346.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,718.99 : 290,590.79 = 51,561.94 : x
  2. Step 2: Convert to fraction form
    193,718.99/290,590.79 = 51,561.94/x
  3. Step 3: Cross multiply
    193,718.99x = 290,590.79 × 51,561.94
  4. Step 4: Simplify right side
    193,718.99x = 14,983,425,546.43
  5. Step 5: Solve for x
    x = 14,983,425,546.43/193,718.99
  6. Step 6: Final answer
    x = 77,346.19

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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.