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Finding the Fourth Proportional to 1,178,226, 1,625,951.88 and 641,682

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Solution

The fourth proportional to 1,178,226, 1,625,951.88 and 641,682 is: 885,521.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,178,226 : 1,625,951.88 = 641,682 : x
  2. Step 2: Convert to fraction form
    1,178,226/1,625,951.88 = 641,682/x
  3. Step 3: Cross multiply
    1,178,226x = 1,625,951.88 × 641,682
  4. Step 4: Simplify right side
    1,178,226x = 1,043,344,054,262.16
  5. Step 5: Solve for x
    x = 1,043,344,054,262.16/1,178,226
  6. Step 6: Final answer
    x = 885,521.16

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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.