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Finding the Fourth Proportional to 945,611.84, 1,304,916 and 515,900.48

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Solution

The fourth proportional to 945,611.84, 1,304,916 and 515,900.48 is: 711,927.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    945,611.84 : 1,304,916 = 515,900.48 : x
  2. Step 2: Convert to fraction form
    945,611.84/1,304,916 = 515,900.48/x
  3. Step 3: Cross multiply
    945,611.84x = 1,304,916 × 515,900.48
  4. Step 4: Simplify right side
    945,611.84x = 673,206,790,759.68
  5. Step 5: Solve for x
    x = 673,206,790,759.68/945,611.84
  6. Step 6: Final answer
    x = 711,927.20

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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.