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Finding the Fourth Proportional to 333,216.68, 499,866.80 and 108,516.78

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Solution

The fourth proportional to 333,216.68, 499,866.80 and 108,516.78 is: 162,788.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    333,216.68 : 499,866.80 = 108,516.78 : x
  2. Step 2: Convert to fraction form
    333,216.68/499,866.80 = 108,516.78/x
  3. Step 3: Cross multiply
    333,216.68x = 499,866.80 × 108,516.78
  4. Step 4: Simplify right side
    333,216.68x = 54,243,935,022.32
  5. Step 5: Solve for x
    x = 54,243,935,022.32/333,216.68
  6. Step 6: Final answer
    x = 162,788.78

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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.