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Finding the Fourth Proportional to 371,380.80, 557,006.40 and 134,601.60

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Solution

The fourth proportional to 371,380.80, 557,006.40 and 134,601.60 is: 201,878.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,380.80 : 557,006.40 = 134,601.60 : x
  2. Step 2: Convert to fraction form
    371,380.80/557,006.40 = 134,601.60/x
  3. Step 3: Cross multiply
    371,380.80x = 557,006.40 × 134,601.60
  4. Step 4: Simplify right side
    371,380.80x = 74,973,952,650.24
  5. Step 5: Solve for x
    x = 74,973,952,650.24/371,380.80
  6. Step 6: Final answer
    x = 201,878.91

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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.