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Finding the Fourth Proportional to 14,765,861.70, 20,621,817.90 and 14,765,861.70

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Solution

The fourth proportional to 14,765,861.70, 20,621,817.90 and 14,765,861.70 is: 20,621,817.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,765,861.70 : 20,621,817.90 = 14,765,861.70 : x
  2. Step 2: Convert to fraction form
    14,765,861.70/20,621,817.90 = 14,765,861.70/x
  3. Step 3: Cross multiply
    14,765,861.70x = 20,621,817.90 × 14,765,861.70
  4. Step 4: Simplify right side
    14,765,861.70x = 304,498,911,113,984.38
  5. Step 5: Solve for x
    x = 304,498,911,113,984.38/14,765,861.70
  6. Step 6: Final answer
    x = 20,621,817.90

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.