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Finding the Fourth Proportional to 853,658.80, 1,280,111 and 454,204.88

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Solution

The fourth proportional to 853,658.80, 1,280,111 and 454,204.88 is: 681,106.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,658.80 : 1,280,111 = 454,204.88 : x
  2. Step 2: Convert to fraction form
    853,658.80/1,280,111 = 454,204.88/x
  3. Step 3: Cross multiply
    853,658.80x = 1,280,111 × 454,204.88
  4. Step 4: Simplify right side
    853,658.80x = 581,432,663,141.68
  5. Step 5: Solve for x
    x = 581,432,663,141.68/853,658.80
  6. Step 6: Final answer
    x = 681,106.62

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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.