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Finding the Fourth Proportional to 291,175.76, 436,763.50 and 80,813.64

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Solution

The fourth proportional to 291,175.76, 436,763.50 and 80,813.64 is: 121,220.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,175.76 : 436,763.50 = 80,813.64 : x
  2. Step 2: Convert to fraction form
    291,175.76/436,763.50 = 80,813.64/x
  3. Step 3: Cross multiply
    291,175.76x = 436,763.50 × 80,813.64
  4. Step 4: Simplify right side
    291,175.76x = 35,296,448,254.14
  5. Step 5: Solve for x
    x = 35,296,448,254.14/291,175.76
  6. Step 6: Final answer
    x = 121,220.42

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1.5x scale

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.