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Finding the Fourth Proportional to 303,561.20, 455,363.90 and 116,572.70

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Solution

The fourth proportional to 303,561.20, 455,363.90 and 116,572.70 is: 174,867.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,561.20 : 455,363.90 = 116,572.70 : x
  2. Step 2: Convert to fraction form
    303,561.20/455,363.90 = 116,572.70/x
  3. Step 3: Cross multiply
    303,561.20x = 455,363.90 × 116,572.70
  4. Step 4: Simplify right side
    303,561.20x = 53,082,996,445.85
  5. Step 5: Solve for x
    x = 53,082,996,445.85/303,561.20
  6. Step 6: Final answer
    x = 174,867.53

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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.