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Finding the Fourth Proportional to 626,209.72, 864,171.09 and 339,729.81

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Solution

The fourth proportional to 626,209.72, 864,171.09 and 339,729.81 is: 468,828.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,209.72 : 864,171.09 = 339,729.81 : x
  2. Step 2: Convert to fraction form
    626,209.72/864,171.09 = 339,729.81/x
  3. Step 3: Cross multiply
    626,209.72x = 864,171.09 × 339,729.81
  4. Step 4: Simplify right side
    626,209.72x = 293,584,674,193.69
  5. Step 5: Solve for x
    x = 293,584,674,193.69/626,209.72
  6. Step 6: Final answer
    x = 468,828.04

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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.