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Finding the Fourth Proportional to 564,672.22, 779,249.20 and 310,039.90

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Solution

The fourth proportional to 564,672.22, 779,249.20 and 310,039.90 is: 427,855.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    564,672.22 : 779,249.20 = 310,039.90 : x
  2. Step 2: Convert to fraction form
    564,672.22/779,249.20 = 310,039.90/x
  3. Step 3: Cross multiply
    564,672.22x = 779,249.20 × 310,039.90
  4. Step 4: Simplify right side
    564,672.22x = 241,598,344,043.08
  5. Step 5: Solve for x
    x = 241,598,344,043.08/564,672.22
  6. Step 6: Final answer
    x = 427,855.91

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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.