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Finding the Fourth Proportional to 440,461.86, 660,791.25 and 140,960.40

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Solution

The fourth proportional to 440,461.86, 660,791.25 and 140,960.40 is: 211,472.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,461.86 : 660,791.25 = 140,960.40 : x
  2. Step 2: Convert to fraction form
    440,461.86/660,791.25 = 140,960.40/x
  3. Step 3: Cross multiply
    440,461.86x = 660,791.25 × 140,960.40
  4. Step 4: Simplify right side
    440,461.86x = 93,145,398,916.50
  5. Step 5: Solve for x
    x = 93,145,398,916.50/440,461.86
  6. Step 6: Final answer
    x = 211,472.11

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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.