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Finding the Fourth Proportional to 666,321.39, 919,545.26 and 364,515.39

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Solution

The fourth proportional to 666,321.39, 919,545.26 and 364,515.39 is: 503,043.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,321.39 : 919,545.26 = 364,515.39 : x
  2. Step 2: Convert to fraction form
    666,321.39/919,545.26 = 364,515.39/x
  3. Step 3: Cross multiply
    666,321.39x = 919,545.26 × 364,515.39
  4. Step 4: Simplify right side
    666,321.39x = 335,188,399,071.55
  5. Step 5: Solve for x
    x = 335,188,399,071.55/666,321.39
  6. Step 6: Final answer
    x = 503,043.13

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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.