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Finding the Fourth Proportional to 419,209.62, 578,584.73 and 247,117.32

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Solution

The fourth proportional to 419,209.62, 578,584.73 and 247,117.32 is: 341,066.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,209.62 : 578,584.73 = 247,117.32 : x
  2. Step 2: Convert to fraction form
    419,209.62/578,584.73 = 247,117.32/x
  3. Step 3: Cross multiply
    419,209.62x = 578,584.73 × 247,117.32
  4. Step 4: Simplify right side
    419,209.62x = 142,978,307,870.52
  5. Step 5: Solve for x
    x = 142,978,307,870.52/419,209.62
  6. Step 6: Final answer
    x = 341,066.38

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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.