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Finding the Fourth Proportional to 677,915.28, 935,518.41 and 376,109.28

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Solution

The fourth proportional to 677,915.28, 935,518.41 and 376,109.28 is: 519,028.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    677,915.28 : 935,518.41 = 376,109.28 : x
  2. Step 2: Convert to fraction form
    677,915.28/935,518.41 = 376,109.28/x
  3. Step 3: Cross multiply
    677,915.28x = 935,518.41 × 376,109.28
  4. Step 4: Simplify right side
    677,915.28x = 351,857,155,611.85
  5. Step 5: Solve for x
    x = 351,857,155,611.85/677,915.28
  6. Step 6: Final answer
    x = 519,028.21

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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.