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Finding the Fourth Proportional to 291,561.72, 437,080.12 and 104,529.48

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Solution

The fourth proportional to 291,561.72, 437,080.12 and 104,529.48 is: 156,700.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,561.72 : 437,080.12 = 104,529.48 : x
  2. Step 2: Convert to fraction form
    291,561.72/437,080.12 = 104,529.48/x
  3. Step 3: Cross multiply
    291,561.72x = 437,080.12 × 104,529.48
  4. Step 4: Simplify right side
    291,561.72x = 45,687,757,661.94
  5. Step 5: Solve for x
    x = 45,687,757,661.94/291,561.72
  6. Step 6: Final answer
    x = 156,700.12

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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.