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Finding the Fourth Proportional to 291,683.20, 437,265.60 and 191,891.20

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Solution

The fourth proportional to 291,683.20, 437,265.60 and 191,891.20 is: 287,666.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,683.20 : 437,265.60 = 191,891.20 : x
  2. Step 2: Convert to fraction form
    291,683.20/437,265.60 = 191,891.20/x
  3. Step 3: Cross multiply
    291,683.20x = 437,265.60 × 191,891.20
  4. Step 4: Simplify right side
    291,683.20x = 83,907,420,702.72
  5. Step 5: Solve for x
    x = 83,907,420,702.72/291,683.20
  6. Step 6: Final answer
    x = 287,666.28

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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.