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Finding the Fourth Proportional to 692,450.78, 956,013.89 and 447,563.53

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Solution

The fourth proportional to 692,450.78, 956,013.89 and 447,563.53 is: 617,916.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,450.78 : 956,013.89 = 447,563.53 : x
  2. Step 2: Convert to fraction form
    692,450.78/956,013.89 = 447,563.53/x
  3. Step 3: Cross multiply
    692,450.78x = 956,013.89 × 447,563.53
  4. Step 4: Simplify right side
    692,450.78x = 427,876,947,434.60
  5. Step 5: Solve for x
    x = 427,876,947,434.60/692,450.78
  6. Step 6: Final answer
    x = 617,916.77

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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.