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Finding the Fourth Proportional to 13,762,138.20, 20,642,551.20 and 4,663,343.40

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Solution

The fourth proportional to 13,762,138.20, 20,642,551.20 and 4,663,343.40 is: 6,994,792.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,762,138.20 : 20,642,551.20 = 4,663,343.40 : x
  2. Step 2: Convert to fraction form
    13,762,138.20/20,642,551.20 = 4,663,343.40/x
  3. Step 3: Cross multiply
    13,762,138.20x = 20,642,551.20 × 4,663,343.40
  4. Step 4: Simplify right side
    13,762,138.20x = 96,263,304,897,682.08
  5. Step 5: Solve for x
    x = 96,263,304,897,682.08/13,762,138.20
  6. Step 6: Final answer
    x = 6,994,792.78

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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.