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Finding the Fourth Proportional to 250,478.73, 345,674.79 and 148,564.53

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Solution

The fourth proportional to 250,478.73, 345,674.79 and 148,564.53 is: 205,027.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,478.73 : 345,674.79 = 148,564.53 : x
  2. Step 2: Convert to fraction form
    250,478.73/345,674.79 = 148,564.53/x
  3. Step 3: Cross multiply
    250,478.73x = 345,674.79 × 148,564.53
  4. Step 4: Simplify right side
    250,478.73x = 51,355,012,709.20
  5. Step 5: Solve for x
    x = 51,355,012,709.20/250,478.73
  6. Step 6: Final answer
    x = 205,027.44

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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.