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Finding the Fourth Proportional to 6,242,947.20, 9,364,420.80 and 1,755,223.20

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Solution

The fourth proportional to 6,242,947.20, 9,364,420.80 and 1,755,223.20 is: 2,632,834.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,242,947.20 : 9,364,420.80 = 1,755,223.20 : x
  2. Step 2: Convert to fraction form
    6,242,947.20/9,364,420.80 = 1,755,223.20/x
  3. Step 3: Cross multiply
    6,242,947.20x = 9,364,420.80 × 1,755,223.20
  4. Step 4: Simplify right side
    6,242,947.20x = 16,436,648,642,722.56
  5. Step 5: Solve for x
    x = 16,436,648,642,722.56/6,242,947.20
  6. Step 6: Final answer
    x = 2,632,834.80

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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.