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Finding the Fourth Proportional to 193,802.88, 290,720.93 and 53,561.51

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Solution

The fourth proportional to 193,802.88, 290,720.93 and 53,561.51 is: 80,346.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,802.88 : 290,720.93 = 53,561.51 : x
  2. Step 2: Convert to fraction form
    193,802.88/290,720.93 = 53,561.51/x
  3. Step 3: Cross multiply
    193,802.88x = 290,720.93 × 53,561.51
  4. Step 4: Simplify right side
    193,802.88x = 15,571,451,999.40
  5. Step 5: Solve for x
    x = 15,571,451,999.40/193,802.88
  6. Step 6: Final answer
    x = 80,346.86

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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.