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Finding the Fourth Proportional to 505,901.36, 698,157.96 and 279,561.44

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Solution

The fourth proportional to 505,901.36, 698,157.96 and 279,561.44 is: 385,802.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,901.36 : 698,157.96 = 279,561.44 : x
  2. Step 2: Convert to fraction form
    505,901.36/698,157.96 = 279,561.44/x
  3. Step 3: Cross multiply
    505,901.36x = 698,157.96 × 279,561.44
  4. Step 4: Simplify right side
    505,901.36x = 195,178,044,645.06
  5. Step 5: Solve for x
    x = 195,178,044,645.06/505,901.36
  6. Step 6: Final answer
    x = 385,802.57

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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.