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Finding the Fourth Proportional to 677,471.58, 934,843.41 and 391,083.93

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Solution

The fourth proportional to 677,471.58, 934,843.41 and 391,083.93 is: 539,656.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    677,471.58 : 934,843.41 = 391,083.93 : x
  2. Step 2: Convert to fraction form
    677,471.58/934,843.41 = 391,083.93/x
  3. Step 3: Cross multiply
    677,471.58x = 934,843.41 × 391,083.93
  4. Step 4: Simplify right side
    677,471.58x = 365,602,234,717.40
  5. Step 5: Solve for x
    x = 365,602,234,717.40/677,471.58
  6. Step 6: Final answer
    x = 539,656.93

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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.