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Finding the Fourth Proportional to 668,861, 923,028.18 and 367,055

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Solution

The fourth proportional to 668,861, 923,028.18 and 367,055 is: 506,535.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,861 : 923,028.18 = 367,055 : x
  2. Step 2: Convert to fraction form
    668,861/923,028.18 = 367,055/x
  3. Step 3: Cross multiply
    668,861x = 923,028.18 × 367,055
  4. Step 4: Simplify right side
    668,861x = 338,802,108,609.90
  5. Step 5: Solve for x
    x = 338,802,108,609.90/668,861
  6. Step 6: Final answer
    x = 506,535.90

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.