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Finding the Fourth Proportional to 505,921.54, 698,171.97 and 279,567.04

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Solution

The fourth proportional to 505,921.54, 698,171.97 and 279,567.04 is: 385,802.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,921.54 : 698,171.97 = 279,567.04 : x
  2. Step 2: Convert to fraction form
    505,921.54/698,171.97 = 279,567.04/x
  3. Step 3: Cross multiply
    505,921.54x = 698,171.97 × 279,567.04
  4. Step 4: Simplify right side
    505,921.54x = 195,185,867,573.01
  5. Step 5: Solve for x
    x = 195,185,867,573.01/505,921.54
  6. Step 6: Final answer
    x = 385,802.65

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1.5x scale

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.