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Finding the Fourth Proportional to 666,511.56, 919,784.43 and 364,705.56

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Solution

The fourth proportional to 666,511.56, 919,784.43 and 364,705.56 is: 503,292.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,511.56 : 919,784.43 = 364,705.56 : x
  2. Step 2: Convert to fraction form
    666,511.56/919,784.43 = 364,705.56/x
  3. Step 3: Cross multiply
    666,511.56x = 919,784.43 × 364,705.56
  4. Step 4: Simplify right side
    666,511.56x = 335,450,495,622.43
  5. Step 5: Solve for x
    x = 335,450,495,622.43/666,511.56
  6. Step 6: Final answer
    x = 503,292.84

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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.