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Finding the Fourth Proportional to 73,439, 101,345.82 and 43,631

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Solution

The fourth proportional to 73,439, 101,345.82 and 43,631 is: 60,210.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,439 : 101,345.82 = 43,631 : x
  2. Step 2: Convert to fraction form
    73,439/101,345.82 = 43,631/x
  3. Step 3: Cross multiply
    73,439x = 101,345.82 × 43,631
  4. Step 4: Simplify right side
    73,439x = 4,421,819,472.42
  5. Step 5: Solve for x
    x = 4,421,819,472.42/73,439
  6. Step 6: Final answer
    x = 60,210.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.