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Finding the Fourth Proportional to 678,108.24, 935,793 and 376,302.24

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Solution

The fourth proportional to 678,108.24, 935,793 and 376,302.24 is: 519,299.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,108.24 : 935,793 = 376,302.24 : x
  2. Step 2: Convert to fraction form
    678,108.24/935,793 = 376,302.24/x
  3. Step 3: Cross multiply
    678,108.24x = 935,793 × 376,302.24
  4. Step 4: Simplify right side
    678,108.24x = 352,141,002,076.32
  5. Step 5: Solve for x
    x = 352,141,002,076.32/678,108.24
  6. Step 6: Final answer
    x = 519,299.10

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Similar ratio
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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.