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Finding the Fourth Proportional to 719,826.38, 993,360.41 and 418,039.82

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Solution

The fourth proportional to 719,826.38, 993,360.41 and 418,039.82 is: 576,894.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,826.38 : 993,360.41 = 418,039.82 : x
  2. Step 2: Convert to fraction form
    719,826.38/993,360.41 = 418,039.82/x
  3. Step 3: Cross multiply
    719,826.38x = 993,360.41 × 418,039.82
  4. Step 4: Simplify right side
    719,826.38x = 415,264,199,934.53
  5. Step 5: Solve for x
    x = 415,264,199,934.53/719,826.38
  6. Step 6: Final answer
    x = 576,894.95

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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.