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Finding the Fourth Proportional to 405,061.75, 607,177.90 and 168,541.75

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Solution

The fourth proportional to 405,061.75, 607,177.90 and 168,541.75 is: 252,640.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,061.75 : 607,177.90 = 168,541.75 : x
  2. Step 2: Convert to fraction form
    405,061.75/607,177.90 = 168,541.75/x
  3. Step 3: Cross multiply
    405,061.75x = 607,177.90 × 168,541.75
  4. Step 4: Simplify right side
    405,061.75x = 102,334,825,827.33
  5. Step 5: Solve for x
    x = 102,334,825,827.33/405,061.75
  6. Step 6: Final answer
    x = 252,640.06

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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.