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Finding the Fourth Proportional to 674,057.66, 930,205.91 and 383,655.05

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Solution

The fourth proportional to 674,057.66, 930,205.91 and 383,655.05 is: 529,447.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,057.66 : 930,205.91 = 383,655.05 : x
  2. Step 2: Convert to fraction form
    674,057.66/930,205.91 = 383,655.05/x
  3. Step 3: Cross multiply
    674,057.66x = 930,205.91 × 383,655.05
  4. Step 4: Simplify right side
    674,057.66x = 356,878,188,342.04
  5. Step 5: Solve for x
    x = 356,878,188,342.04/674,057.66
  6. Step 6: Final answer
    x = 529,447.57

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.