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Finding the Fourth Proportional to 945,620.64, 1,304,955 and 515,900.61

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Solution

The fourth proportional to 945,620.64, 1,304,955 and 515,900.61 is: 711,942.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    945,620.64 : 1,304,955 = 515,900.61 : x
  2. Step 2: Convert to fraction form
    945,620.64/1,304,955 = 515,900.61/x
  3. Step 3: Cross multiply
    945,620.64x = 1,304,955 × 515,900.61
  4. Step 4: Simplify right side
    945,620.64x = 673,227,080,522.55
  5. Step 5: Solve for x
    x = 673,227,080,522.55/945,620.64
  6. Step 6: Final answer
    x = 711,942.03

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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.