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Finding the Fourth Proportional to 696,858.53, 961,737.57 and 391,017.51

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Solution

The fourth proportional to 696,858.53, 961,737.57 and 391,017.51 is: 539,645.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    696,858.53 : 961,737.57 = 391,017.51 : x
  2. Step 2: Convert to fraction form
    696,858.53/961,737.57 = 391,017.51/x
  3. Step 3: Cross multiply
    696,858.53x = 961,737.57 × 391,017.51
  4. Step 4: Simplify right side
    696,858.53x = 376,056,229,894.85
  5. Step 5: Solve for x
    x = 376,056,229,894.85/696,858.53
  6. Step 6: Final answer
    x = 539,645.02

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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.