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Finding the Fourth Proportional to 548,428.20, 822,310.07 and 358,659.51

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Solution

The fourth proportional to 548,428.20, 822,310.07 and 358,659.51 is: 537,771.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,428.20 : 822,310.07 = 358,659.51 : x
  2. Step 2: Convert to fraction form
    548,428.20/822,310.07 = 358,659.51/x
  3. Step 3: Cross multiply
    548,428.20x = 822,310.07 × 358,659.51
  4. Step 4: Simplify right side
    548,428.20x = 294,929,324,980.97
  5. Step 5: Solve for x
    x = 294,929,324,980.97/548,428.20
  6. Step 6: Final answer
    x = 537,771.99

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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.