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Finding the Fourth Proportional to 651,754.40, 978,506.40 and 416,141.60

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Solution

The fourth proportional to 651,754.40, 978,506.40 and 416,141.60 is: 624,770.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,754.40 : 978,506.40 = 416,141.60 : x
  2. Step 2: Convert to fraction form
    651,754.40/978,506.40 = 416,141.60/x
  3. Step 3: Cross multiply
    651,754.40x = 978,506.40 × 416,141.60
  4. Step 4: Simplify right side
    651,754.40x = 407,197,218,906.24
  5. Step 5: Solve for x
    x = 407,197,218,906.24/651,754.40
  6. Step 6: Final answer
    x = 624,770.95

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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.