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Finding the Fourth Proportional to 432,402.80, 648,604.20 and 373,305.20

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Solution

The fourth proportional to 432,402.80, 648,604.20 and 373,305.20 is: 559,957.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,402.80 : 648,604.20 = 373,305.20 : x
  2. Step 2: Convert to fraction form
    432,402.80/648,604.20 = 373,305.20/x
  3. Step 3: Cross multiply
    432,402.80x = 648,604.20 × 373,305.20
  4. Step 4: Simplify right side
    432,402.80x = 242,127,320,601.84
  5. Step 5: Solve for x
    x = 242,127,320,601.84/432,402.80
  6. Step 6: Final answer
    x = 559,957.80

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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.