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Finding the Fourth Proportional to 611,178.60, 843,413.40 and 339,230.64

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Solution

The fourth proportional to 611,178.60, 843,413.40 and 339,230.64 is: 468,131.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,178.60 : 843,413.40 = 339,230.64 : x
  2. Step 2: Convert to fraction form
    611,178.60/843,413.40 = 339,230.64/x
  3. Step 3: Cross multiply
    611,178.60x = 843,413.40 × 339,230.64
  4. Step 4: Simplify right side
    611,178.60x = 286,111,667,466.58
  5. Step 5: Solve for x
    x = 286,111,667,466.58/611,178.60
  6. Step 6: Final answer
    x = 468,131.03

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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.