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Finding the Fourth Proportional to 19,821,806.20, 27,814,301.60 and 19,821,806.20

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Solution

The fourth proportional to 19,821,806.20, 27,814,301.60 and 19,821,806.20 is: 27,814,301.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,821,806.20 : 27,814,301.60 = 19,821,806.20 : x
  2. Step 2: Convert to fraction form
    19,821,806.20/27,814,301.60 = 19,821,806.20/x
  3. Step 3: Cross multiply
    19,821,806.20x = 27,814,301.60 × 19,821,806.20
  4. Step 4: Simplify right side
    19,821,806.20x = 551,329,695,903,549.94
  5. Step 5: Solve for x
    x = 551,329,695,903,549.94/19,821,806.20
  6. Step 6: Final answer
    x = 27,814,301.60

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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.