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Finding the Fourth Proportional to 289,525.32, 434,204.70 and 99,936.42

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Solution

The fourth proportional to 289,525.32, 434,204.70 and 99,936.42 is: 149,875.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,525.32 : 434,204.70 = 99,936.42 : x
  2. Step 2: Convert to fraction form
    289,525.32/434,204.70 = 99,936.42/x
  3. Step 3: Cross multiply
    289,525.32x = 434,204.70 × 99,936.42
  4. Step 4: Simplify right side
    289,525.32x = 43,392,863,265.17
  5. Step 5: Solve for x
    x = 43,392,863,265.17/289,525.32
  6. Step 6: Final answer
    x = 149,875.88

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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.