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Finding the Fourth Proportional to 698,445.66, 963,861.76 and 396,641.82

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Solution

The fourth proportional to 698,445.66, 963,861.76 and 396,641.82 is: 547,369.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    698,445.66 : 963,861.76 = 396,641.82 : x
  2. Step 2: Convert to fraction form
    698,445.66/963,861.76 = 396,641.82/x
  3. Step 3: Cross multiply
    698,445.66x = 963,861.76 × 396,641.82
  4. Step 4: Simplify right side
    698,445.66x = 382,307,882,714.80
  5. Step 5: Solve for x
    x = 382,307,882,714.80/698,445.66
  6. Step 6: Final answer
    x = 547,369.54

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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.