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Finding the Fourth Proportional to 28,003,592.80, 41,921,408.40 and 16,638,191.20

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Solution

The fourth proportional to 28,003,592.80, 41,921,408.40 and 16,638,191.20 is: 24,907,390.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,003,592.80 : 41,921,408.40 = 16,638,191.20 : x
  2. Step 2: Convert to fraction form
    28,003,592.80/41,921,408.40 = 16,638,191.20/x
  3. Step 3: Cross multiply
    28,003,592.80x = 41,921,408.40 × 16,638,191.20
  4. Step 4: Simplify right side
    28,003,592.80x = 697,496,408,332,486
  5. Step 5: Solve for x
    x = 697,496,408,332,486/28,003,592.80
  6. Step 6: Final answer
    x = 24,907,390.04

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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.