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Finding the Fourth Proportional to 666,545.09, 919,809.41 and 380,157.44

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Solution

The fourth proportional to 666,545.09, 919,809.41 and 380,157.44 is: 524,604.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,545.09 : 919,809.41 = 380,157.44 : x
  2. Step 2: Convert to fraction form
    666,545.09/919,809.41 = 380,157.44/x
  3. Step 3: Cross multiply
    666,545.09x = 919,809.41 × 380,157.44
  4. Step 4: Simplify right side
    666,545.09x = 349,672,384,093.68
  5. Step 5: Solve for x
    x = 349,672,384,093.68/666,545.09
  6. Step 6: Final answer
    x = 524,604.25

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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.