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Finding the Fourth Proportional to 662,977.80, 994,466.70 and 411,035.40

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Solution

The fourth proportional to 662,977.80, 994,466.70 and 411,035.40 is: 616,553.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,977.80 : 994,466.70 = 411,035.40 : x
  2. Step 2: Convert to fraction form
    662,977.80/994,466.70 = 411,035.40/x
  3. Step 3: Cross multiply
    662,977.80x = 994,466.70 × 411,035.40
  4. Step 4: Simplify right side
    662,977.80x = 408,761,017,821.18
  5. Step 5: Solve for x
    x = 408,761,017,821.18/662,977.80
  6. Step 6: Final answer
    x = 616,553.10

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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.