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Finding the Fourth Proportional to 123,287.87, 184,929.80 and 39,047.92

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Solution

The fourth proportional to 123,287.87, 184,929.80 and 39,047.92 is: 58,571.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,287.87 : 184,929.80 = 39,047.92 : x
  2. Step 2: Convert to fraction form
    123,287.87/184,929.80 = 39,047.92/x
  3. Step 3: Cross multiply
    123,287.87x = 184,929.80 × 39,047.92
  4. Step 4: Simplify right side
    123,287.87x = 7,221,123,378.45
  5. Step 5: Solve for x
    x = 7,221,123,378.45/123,287.87
  6. Step 6: Final answer
    x = 58,571.24

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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.