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Finding the Fourth Proportional to 669,778.88, 923,760.30 and 440,571.56

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Solution

The fourth proportional to 669,778.88, 923,760.30 and 440,571.56 is: 607,637.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,778.88 : 923,760.30 = 440,571.56 : x
  2. Step 2: Convert to fraction form
    669,778.88/923,760.30 = 440,571.56/x
  3. Step 3: Cross multiply
    669,778.88x = 923,760.30 × 440,571.56
  4. Step 4: Simplify right side
    669,778.88x = 406,982,516,437.07
  5. Step 5: Solve for x
    x = 406,982,516,437.07/669,778.88
  6. Step 6: Final answer
    x = 607,637.13

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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.