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Finding the Fourth Proportional to 18,806,554.80, 28,209,832.20 and 18,806,554.80

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Solution

The fourth proportional to 18,806,554.80, 28,209,832.20 and 18,806,554.80 is: 28,209,832.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,806,554.80 : 28,209,832.20 = 18,806,554.80 : x
  2. Step 2: Convert to fraction form
    18,806,554.80/28,209,832.20 = 18,806,554.80/x
  3. Step 3: Cross multiply
    18,806,554.80x = 28,209,832.20 × 18,806,554.80
  4. Step 4: Simplify right side
    18,806,554.80x = 530,529,755,168,104.56
  5. Step 5: Solve for x
    x = 530,529,755,168,104.56/18,806,554.80
  6. Step 6: Final answer
    x = 28,209,832.20

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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.