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Finding the Fourth Proportional to 693,551, 957,178.26 and 391,764.44

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Solution

The fourth proportional to 693,551, 957,178.26 and 391,764.44 is: 540,678.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,551 : 957,178.26 = 391,764.44 : x
  2. Step 2: Convert to fraction form
    693,551/957,178.26 = 391,764.44/x
  3. Step 3: Cross multiply
    693,551x = 957,178.26 × 391,764.44
  4. Step 4: Simplify right side
    693,551x = 374,988,405,009.07
  5. Step 5: Solve for x
    x = 374,988,405,009.07/693,551
  6. Step 6: Final answer
    x = 540,678.92

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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.