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Finding the Fourth Proportional to 443,963.48, 666,044.94 and 128,444.96

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Solution

The fourth proportional to 443,963.48, 666,044.94 and 128,444.96 is: 192,696.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,963.48 : 666,044.94 = 128,444.96 : x
  2. Step 2: Convert to fraction form
    443,963.48/666,044.94 = 128,444.96/x
  3. Step 3: Cross multiply
    443,963.48x = 666,044.94 × 128,444.96
  4. Step 4: Simplify right side
    443,963.48x = 85,550,115,676.50
  5. Step 5: Solve for x
    x = 85,550,115,676.50/443,963.48
  6. Step 6: Final answer
    x = 192,696.29

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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.