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Finding the Fourth Proportional to 13,662,965.70, 20,494,448.55 and 3,565,586.70

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Solution

The fourth proportional to 13,662,965.70, 20,494,448.55 and 3,565,586.70 is: 5,348,380.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,662,965.70 : 20,494,448.55 = 3,565,586.70 : x
  2. Step 2: Convert to fraction form
    13,662,965.70/20,494,448.55 = 3,565,586.70/x
  3. Step 3: Cross multiply
    13,662,965.70x = 20,494,448.55 × 3,565,586.70
  4. Step 4: Simplify right side
    13,662,965.70x = 73,074,733,173,714.30
  5. Step 5: Solve for x
    x = 73,074,733,173,714.30/13,662,965.70
  6. Step 6: Final answer
    x = 5,348,380.05

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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.