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Finding the Fourth Proportional to 505,917.03, 698,209.70 and 279,606.27

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Solution

The fourth proportional to 505,917.03, 698,209.70 and 279,606.27 is: 385,881.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,917.03 : 698,209.70 = 279,606.27 : x
  2. Step 2: Convert to fraction form
    505,917.03/698,209.70 = 279,606.27/x
  3. Step 3: Cross multiply
    505,917.03x = 698,209.70 × 279,606.27
  4. Step 4: Simplify right side
    505,917.03x = 195,223,808,496.79
  5. Step 5: Solve for x
    x = 195,223,808,496.79/505,917.03
  6. Step 6: Final answer
    x = 385,881.08

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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.