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Finding the Fourth Proportional to 291,199.77, 436,783.22 and 129,047.12

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Solution

The fourth proportional to 291,199.77, 436,783.22 and 129,047.12 is: 193,563.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,199.77 : 436,783.22 = 129,047.12 : x
  2. Step 2: Convert to fraction form
    291,199.77/436,783.22 = 129,047.12/x
  3. Step 3: Cross multiply
    291,199.77x = 436,783.22 × 129,047.12
  4. Step 4: Simplify right side
    291,199.77x = 56,365,616,605.33
  5. Step 5: Solve for x
    x = 56,365,616,605.33/291,199.77
  6. Step 6: Final answer
    x = 193,563.40

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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.