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Finding the Fourth Proportional to 469,879.20, 704,818.80 and 154,346.40

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Solution

The fourth proportional to 469,879.20, 704,818.80 and 154,346.40 is: 231,519.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    469,879.20 : 704,818.80 = 154,346.40 : x
  2. Step 2: Convert to fraction form
    469,879.20/704,818.80 = 154,346.40/x
  3. Step 3: Cross multiply
    469,879.20x = 704,818.80 × 154,346.40
  4. Step 4: Simplify right side
    469,879.20x = 108,786,244,432.32
  5. Step 5: Solve for x
    x = 108,786,244,432.32/469,879.20
  6. Step 6: Final answer
    x = 231,519.60

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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.