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Finding the Fourth Proportional to 270,731.40, 406,097.10 and 73,739.40

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Solution

The fourth proportional to 270,731.40, 406,097.10 and 73,739.40 is: 110,609.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,731.40 : 406,097.10 = 73,739.40 : x
  2. Step 2: Convert to fraction form
    270,731.40/406,097.10 = 73,739.40/x
  3. Step 3: Cross multiply
    270,731.40x = 406,097.10 × 73,739.40
  4. Step 4: Simplify right side
    270,731.40x = 29,945,356,495.74
  5. Step 5: Solve for x
    x = 29,945,356,495.74/270,731.40
  6. Step 6: Final answer
    x = 110,609.10

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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.