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Finding the Fourth Proportional to 202,219.20, 303,328.80 and 54,475.20

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Solution

The fourth proportional to 202,219.20, 303,328.80 and 54,475.20 is: 81,712.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,219.20 : 303,328.80 = 54,475.20 : x
  2. Step 2: Convert to fraction form
    202,219.20/303,328.80 = 54,475.20/x
  3. Step 3: Cross multiply
    202,219.20x = 303,328.80 × 54,475.20
  4. Step 4: Simplify right side
    202,219.20x = 16,523,897,045.76
  5. Step 5: Solve for x
    x = 16,523,897,045.76/202,219.20
  6. Step 6: Final answer
    x = 81,712.80

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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.