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Finding the Fourth Proportional to 136,098.70, 203,929.35 and 100,669.30

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Solution

The fourth proportional to 136,098.70, 203,929.35 and 100,669.30 is: 150,842.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,098.70 : 203,929.35 = 100,669.30 : x
  2. Step 2: Convert to fraction form
    136,098.70/203,929.35 = 100,669.30/x
  3. Step 3: Cross multiply
    136,098.70x = 203,929.35 × 100,669.30
  4. Step 4: Simplify right side
    136,098.70x = 20,529,424,913.96
  5. Step 5: Solve for x
    x = 20,529,424,913.96/136,098.70
  6. Step 6: Final answer
    x = 150,842.18

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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.