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Finding the Fourth Proportional to 469,818.60, 704,804.70 and 154,189.80

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Solution

The fourth proportional to 469,818.60, 704,804.70 and 154,189.80 is: 231,309.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    469,818.60 : 704,804.70 = 154,189.80 : x
  2. Step 2: Convert to fraction form
    469,818.60/704,804.70 = 154,189.80/x
  3. Step 3: Cross multiply
    469,818.60x = 704,804.70 × 154,189.80
  4. Step 4: Simplify right side
    469,818.60x = 108,673,695,732.06
  5. Step 5: Solve for x
    x = 108,673,695,732.06/469,818.60
  6. Step 6: Final answer
    x = 231,309.90

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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.