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Finding the Fourth Proportional to 432,068.80, 648,103.20 and 132,595.60

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Solution

The fourth proportional to 432,068.80, 648,103.20 and 132,595.60 is: 198,893.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,068.80 : 648,103.20 = 132,595.60 : x
  2. Step 2: Convert to fraction form
    432,068.80/648,103.20 = 132,595.60/x
  3. Step 3: Cross multiply
    432,068.80x = 648,103.20 × 132,595.60
  4. Step 4: Simplify right side
    432,068.80x = 85,935,632,665.92
  5. Step 5: Solve for x
    x = 85,935,632,665.92/432,068.80
  6. Step 6: Final answer
    x = 198,893.40

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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.