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Finding the Fourth Proportional to 666,056.40, 999,214.20 and 192,757.20

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Solution

The fourth proportional to 666,056.40, 999,214.20 and 192,757.20 is: 289,173.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,056.40 : 999,214.20 = 192,757.20 : x
  2. Step 2: Convert to fraction form
    666,056.40/999,214.20 = 192,757.20/x
  3. Step 3: Cross multiply
    666,056.40x = 999,214.20 × 192,757.20
  4. Step 4: Simplify right side
    666,056.40x = 192,605,731,392.24
  5. Step 5: Solve for x
    x = 192,605,731,392.24/666,056.40
  6. Step 6: Final answer
    x = 289,173.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.