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Finding the Fourth Proportional to 698,240.89, 963,573.06 and 396,434.89

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Solution

The fourth proportional to 698,240.89, 963,573.06 and 396,434.89 is: 547,080.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    698,240.89 : 963,573.06 = 396,434.89 : x
  2. Step 2: Convert to fraction form
    698,240.89/963,573.06 = 396,434.89/x
  3. Step 3: Cross multiply
    698,240.89x = 963,573.06 × 396,434.89
  4. Step 4: Simplify right side
    698,240.89x = 381,993,980,048.06
  5. Step 5: Solve for x
    x = 381,993,980,048.06/698,240.89
  6. Step 6: Final answer
    x = 547,080.51

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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.