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Finding the Fourth Proportional to 505,928.08, 698,153.34 and 279,559

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Solution

The fourth proportional to 505,928.08, 698,153.34 and 279,559 is: 385,776.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,928.08 : 698,153.34 = 279,559 : x
  2. Step 2: Convert to fraction form
    505,928.08/698,153.34 = 279,559/x
  3. Step 3: Cross multiply
    505,928.08x = 698,153.34 × 279,559
  4. Step 4: Simplify right side
    505,928.08x = 195,175,049,577.06
  5. Step 5: Solve for x
    x = 195,175,049,577.06/505,928.08
  6. Step 6: Final answer
    x = 385,776.27

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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.