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Finding the Fourth Proportional to 666,161.92, 919,683.84 and 440,462.08

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Solution

The fourth proportional to 666,161.92, 919,683.84 and 440,462.08 is: 608,089.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,161.92 : 919,683.84 = 440,462.08 : x
  2. Step 2: Convert to fraction form
    666,161.92/919,683.84 = 440,462.08/x
  3. Step 3: Cross multiply
    666,161.92x = 919,683.84 × 440,462.08
  4. Step 4: Simplify right side
    666,161.92x = 405,085,857,108.79
  5. Step 5: Solve for x
    x = 405,085,857,108.79/666,161.92
  6. Step 6: Final answer
    x = 608,089.18

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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.