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Finding the Fourth Proportional to 505,912.95, 698,169.04 and 276,479.96

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Solution

The fourth proportional to 505,912.95, 698,169.04 and 276,479.96 is: 381,547.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,912.95 : 698,169.04 = 276,479.96 : x
  2. Step 2: Convert to fraction form
    505,912.95/698,169.04 = 276,479.96/x
  3. Step 3: Cross multiply
    505,912.95x = 698,169.04 × 276,479.96
  4. Step 4: Simplify right side
    505,912.95x = 193,029,744,070.39
  5. Step 5: Solve for x
    x = 193,029,744,070.39/505,912.95
  6. Step 6: Final answer
    x = 381,547.35

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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.