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Finding the Fourth Proportional to 636,105.65, 954,156.56 and 257,021.91

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Solution

The fourth proportional to 636,105.65, 954,156.56 and 257,021.91 is: 385,532.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,105.65 : 954,156.56 = 257,021.91 : x
  2. Step 2: Convert to fraction form
    636,105.65/954,156.56 = 257,021.91/x
  3. Step 3: Cross multiply
    636,105.65x = 954,156.56 × 257,021.91
  4. Step 4: Simplify right side
    636,105.65x = 245,239,140,205.12
  5. Step 5: Solve for x
    x = 245,239,140,205.12/636,105.65
  6. Step 6: Final answer
    x = 385,532.09

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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.