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Finding the Fourth Proportional to 149,903.30, 224,743.73 and 90,724.90

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Solution

The fourth proportional to 149,903.30, 224,743.73 and 90,724.90 is: 136,020.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,903.30 : 224,743.73 = 90,724.90 : x
  2. Step 2: Convert to fraction form
    149,903.30/224,743.73 = 90,724.90/x
  3. Step 3: Cross multiply
    149,903.30x = 224,743.73 × 90,724.90
  4. Step 4: Simplify right side
    149,903.30x = 20,389,852,429.88
  5. Step 5: Solve for x
    x = 20,389,852,429.88/149,903.30
  6. Step 6: Final answer
    x = 136,020.04

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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.