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Finding the Fourth Proportional to 6,806,512.80, 10,209,769.20 and 6,806,512.80

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Solution

The fourth proportional to 6,806,512.80, 10,209,769.20 and 6,806,512.80 is: 10,209,769.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,806,512.80 : 10,209,769.20 = 6,806,512.80 : x
  2. Step 2: Convert to fraction form
    6,806,512.80/10,209,769.20 = 6,806,512.80/x
  3. Step 3: Cross multiply
    6,806,512.80x = 10,209,769.20 × 6,806,512.80
  4. Step 4: Simplify right side
    6,806,512.80x = 69,492,924,744,845.75
  5. Step 5: Solve for x
    x = 69,492,924,744,845.75/6,806,512.80
  6. Step 6: Final answer
    x = 10,209,769.20

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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.