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Finding the Fourth Proportional to 679,711.78, 937,982.41 and 373,787.84

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Solution

The fourth proportional to 679,711.78, 937,982.41 and 373,787.84 is: 515,816.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,711.78 : 937,982.41 = 373,787.84 : x
  2. Step 2: Convert to fraction form
    679,711.78/937,982.41 = 373,787.84/x
  3. Step 3: Cross multiply
    679,711.78x = 937,982.41 × 373,787.84
  4. Step 4: Simplify right side
    679,711.78x = 350,606,417,581.41
  5. Step 5: Solve for x
    x = 350,606,417,581.41/679,711.78
  6. Step 6: Final answer
    x = 515,816.31

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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.