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Finding the Fourth Proportional to 666,324.40, 919,549.41 and 364,518.40

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Solution

The fourth proportional to 666,324.40, 919,549.41 and 364,518.40 is: 503,047.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,324.40 : 919,549.41 = 364,518.40 : x
  2. Step 2: Convert to fraction form
    666,324.40/919,549.41 = 364,518.40/x
  3. Step 3: Cross multiply
    666,324.40x = 919,549.41 × 364,518.40
  4. Step 4: Simplify right side
    666,324.40x = 335,192,679,654.14
  5. Step 5: Solve for x
    x = 335,192,679,654.14/666,324.40
  6. Step 6: Final answer
    x = 503,047.28

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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.