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Finding the Fourth Proportional to 678,193.44, 935,909.52 and 376,387.44

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Solution

The fourth proportional to 678,193.44, 935,909.52 and 376,387.44 is: 519,416.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,193.44 : 935,909.52 = 376,387.44 : x
  2. Step 2: Convert to fraction form
    678,193.44/935,909.52 = 376,387.44/x
  3. Step 3: Cross multiply
    678,193.44x = 935,909.52 × 376,387.44
  4. Step 4: Simplify right side
    678,193.44x = 352,264,588,304.43
  5. Step 5: Solve for x
    x = 352,264,588,304.43/678,193.44
  6. Step 6: Final answer
    x = 519,416.10

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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.