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Finding the Fourth Proportional to 474,681.20, 711,791.40 and 264,095.60

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Solution

The fourth proportional to 474,681.20, 711,791.40 and 264,095.60 is: 396,015.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    474,681.20 : 711,791.40 = 264,095.60 : x
  2. Step 2: Convert to fraction form
    474,681.20/711,791.40 = 264,095.60/x
  3. Step 3: Cross multiply
    474,681.20x = 711,791.40 × 264,095.60
  4. Step 4: Simplify right side
    474,681.20x = 187,980,976,857.84
  5. Step 5: Solve for x
    x = 187,980,976,857.84/474,681.20
  6. Step 6: Final answer
    x = 396,015.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.