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Finding the Fourth Proportional to 291,277.58, 436,940.01 and 80,915.49

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Solution

The fourth proportional to 291,277.58, 436,940.01 and 80,915.49 is: 121,379.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,277.58 : 436,940.01 = 80,915.49 : x
  2. Step 2: Convert to fraction form
    291,277.58/436,940.01 = 80,915.49/x
  3. Step 3: Cross multiply
    291,277.58x = 436,940.01 × 80,915.49
  4. Step 4: Simplify right side
    291,277.58x = 35,355,215,009.75
  5. Step 5: Solve for x
    x = 35,355,215,009.75/291,277.58
  6. Step 6: Final answer
    x = 121,379.80

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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.