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Finding the Fourth Proportional to 714,455.56, 985,894.50 and 392,114.44

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Solution

The fourth proportional to 714,455.56, 985,894.50 and 392,114.44 is: 541,088.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,455.56 : 985,894.50 = 392,114.44 : x
  2. Step 2: Convert to fraction form
    714,455.56/985,894.50 = 392,114.44/x
  3. Step 3: Cross multiply
    714,455.56x = 985,894.50 × 392,114.44
  4. Step 4: Simplify right side
    714,455.56x = 386,583,469,766.58
  5. Step 5: Solve for x
    x = 386,583,469,766.58/714,455.56
  6. Step 6: Final answer
    x = 541,088.20

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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.