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Finding the Fourth Proportional to 707,754, 976,685.94 and 385,469.76

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Solution

The fourth proportional to 707,754, 976,685.94 and 385,469.76 is: 531,940.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,754 : 976,685.94 = 385,469.76 : x
  2. Step 2: Convert to fraction form
    707,754/976,685.94 = 385,469.76/x
  3. Step 3: Cross multiply
    707,754x = 976,685.94 × 385,469.76
  4. Step 4: Simplify right side
    707,754x = 376,482,894,887.17
  5. Step 5: Solve for x
    x = 376,482,894,887.17/707,754
  6. Step 6: Final answer
    x = 531,940.33

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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.