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Finding the Fourth Proportional to 668,936.81, 923,133.40 and 363,013.20

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Solution

The fourth proportional to 668,936.81, 923,133.40 and 363,013.20 is: 500,958.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,936.81 : 923,133.40 = 363,013.20 : x
  2. Step 2: Convert to fraction form
    668,936.81/923,133.40 = 363,013.20/x
  3. Step 3: Cross multiply
    668,936.81x = 923,133.40 × 363,013.20
  4. Step 4: Simplify right side
    668,936.81x = 335,109,608,653.35
  5. Step 5: Solve for x
    x = 335,109,608,653.35/668,936.81
  6. Step 6: Final answer
    x = 500,958.54

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1.5x scale

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.