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Finding the Fourth Proportional to 69,243,687.84, 103,874,981.28 and 28,844,724

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Solution

The fourth proportional to 69,243,687.84, 103,874,981.28 and 28,844,724 is: 43,271,022.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,243,687.84 : 103,874,981.28 = 28,844,724 : x
  2. Step 2: Convert to fraction form
    69,243,687.84/103,874,981.28 = 28,844,724/x
  3. Step 3: Cross multiply
    69,243,687.84x = 103,874,981.28 × 28,844,724
  4. Step 4: Simplify right side
    69,243,687.84x = 2,996,245,165,526,767
  5. Step 5: Solve for x
    x = 2,996,245,165,526,767/69,243,687.84
  6. Step 6: Final answer
    x = 43,271,022.37

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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.