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Finding the Fourth Proportional to 18,669,969.60, 28,004,954.40 and 17,536,228.80

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Solution

The fourth proportional to 18,669,969.60, 28,004,954.40 and 17,536,228.80 is: 26,304,343.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,669,969.60 : 28,004,954.40 = 17,536,228.80 : x
  2. Step 2: Convert to fraction form
    18,669,969.60/28,004,954.40 = 17,536,228.80/x
  3. Step 3: Cross multiply
    18,669,969.60x = 28,004,954.40 × 17,536,228.80
  4. Step 4: Simplify right side
    18,669,969.60x = 491,101,287,891,966.69
  5. Step 5: Solve for x
    x = 491,101,287,891,966.69/18,669,969.60
  6. Step 6: Final answer
    x = 26,304,343.20

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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.