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Finding the Fourth Proportional to 404,318.55, 606,477.83 and 358,828.95

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Solution

The fourth proportional to 404,318.55, 606,477.83 and 358,828.95 is: 538,243.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,318.55 : 606,477.83 = 358,828.95 : x
  2. Step 2: Convert to fraction form
    404,318.55/606,477.83 = 358,828.95/x
  3. Step 3: Cross multiply
    404,318.55x = 606,477.83 × 358,828.95
  4. Step 4: Simplify right side
    404,318.55x = 217,621,801,143.03
  5. Step 5: Solve for x
    x = 217,621,801,143.03/404,318.55
  6. Step 6: Final answer
    x = 538,243.43

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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.