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Finding the Fourth Proportional to 419,168.44, 578,428.86 and 228,170.44

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Solution

The fourth proportional to 419,168.44, 578,428.86 and 228,170.44 is: 314,862.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,168.44 : 578,428.86 = 228,170.44 : x
  2. Step 2: Convert to fraction form
    419,168.44/578,428.86 = 228,170.44/x
  3. Step 3: Cross multiply
    419,168.44x = 578,428.86 × 228,170.44
  4. Step 4: Simplify right side
    419,168.44x = 131,980,367,494.90
  5. Step 5: Solve for x
    x = 131,980,367,494.90/419,168.44
  6. Step 6: Final answer
    x = 314,862.37

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1.5x scale

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.