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Finding the Fourth Proportional to 691,614.82, 954,666.57 and 405,227.62

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Solution

The fourth proportional to 691,614.82, 954,666.57 and 405,227.62 is: 559,353.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,614.82 : 954,666.57 = 405,227.62 : x
  2. Step 2: Convert to fraction form
    691,614.82/954,666.57 = 405,227.62/x
  3. Step 3: Cross multiply
    691,614.82x = 954,666.57 × 405,227.62
  4. Step 4: Simplify right side
    691,614.82x = 386,857,262,054.66
  5. Step 5: Solve for x
    x = 386,857,262,054.66/691,614.82
  6. Step 6: Final answer
    x = 559,353.63

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1.5x scale

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.