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Finding the Fourth Proportional to 469,620.20, 704,430.30 and 154,087.40

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Solution

The fourth proportional to 469,620.20, 704,430.30 and 154,087.40 is: 231,131.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    469,620.20 : 704,430.30 = 154,087.40 : x
  2. Step 2: Convert to fraction form
    469,620.20/704,430.30 = 154,087.40/x
  3. Step 3: Cross multiply
    469,620.20x = 704,430.30 × 154,087.40
  4. Step 4: Simplify right side
    469,620.20x = 108,543,833,408.22
  5. Step 5: Solve for x
    x = 108,543,833,408.22/469,620.20
  6. Step 6: Final answer
    x = 231,131.10

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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.