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Finding the Fourth Proportional to 4,751,542.62, 7,126,942.05 and 1,339,691.40

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Solution

The fourth proportional to 4,751,542.62, 7,126,942.05 and 1,339,691.40 is: 2,009,432.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,751,542.62 : 7,126,942.05 = 1,339,691.40 : x
  2. Step 2: Convert to fraction form
    4,751,542.62/7,126,942.05 = 1,339,691.40/x
  3. Step 3: Cross multiply
    4,751,542.62x = 7,126,942.05 × 1,339,691.40
  4. Step 4: Simplify right side
    4,751,542.62x = 9,547,902,972,683.37
  5. Step 5: Solve for x
    x = 9,547,902,972,683.37/4,751,542.62
  6. Step 6: Final answer
    x = 2,009,432.25

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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.