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Finding the Fourth Proportional to 678,261.84, 936,045.52 and 391,794

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Solution

The fourth proportional to 678,261.84, 936,045.52 and 391,794 is: 540,701.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,261.84 : 936,045.52 = 391,794 : x
  2. Step 2: Convert to fraction form
    678,261.84/936,045.52 = 391,794/x
  3. Step 3: Cross multiply
    678,261.84x = 936,045.52 × 391,794
  4. Step 4: Simplify right side
    678,261.84x = 366,737,018,462.88
  5. Step 5: Solve for x
    x = 366,737,018,462.88/678,261.84
  6. Step 6: Final answer
    x = 540,701.24

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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.