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Finding the Fourth Proportional to 568,426.88, 784,434.56 and 313,772.60

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Solution

The fourth proportional to 568,426.88, 784,434.56 and 313,772.60 is: 433,009.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    568,426.88 : 784,434.56 = 313,772.60 : x
  2. Step 2: Convert to fraction form
    568,426.88/784,434.56 = 313,772.60/x
  3. Step 3: Cross multiply
    568,426.88x = 784,434.56 × 313,772.60
  4. Step 4: Simplify right side
    568,426.88x = 246,134,071,421.06
  5. Step 5: Solve for x
    x = 246,134,071,421.06/568,426.88
  6. Step 6: Final answer
    x = 433,009.21

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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.