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Finding the Fourth Proportional to 443,978.51, 665,856.95 and 174,161.50

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Solution

The fourth proportional to 443,978.51, 665,856.95 and 174,161.50 is: 261,198.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,978.51 : 665,856.95 = 174,161.50 : x
  2. Step 2: Convert to fraction form
    443,978.51/665,856.95 = 174,161.50/x
  3. Step 3: Cross multiply
    443,978.51x = 665,856.95 × 174,161.50
  4. Step 4: Simplify right side
    443,978.51x = 115,966,642,661.98
  5. Step 5: Solve for x
    x = 115,966,642,661.98/443,978.51
  6. Step 6: Final answer
    x = 261,198.78

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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.