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Finding the Fourth Proportional to 23,178,878.80, 34,772,983.80 and 19,418,405.20

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Solution

The fourth proportional to 23,178,878.80, 34,772,983.80 and 19,418,405.20 is: 29,131,516.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,178,878.80 : 34,772,983.80 = 19,418,405.20 : x
  2. Step 2: Convert to fraction form
    23,178,878.80/34,772,983.80 = 19,418,405.20/x
  3. Step 3: Cross multiply
    23,178,878.80x = 34,772,983.80 × 19,418,405.20
  4. Step 4: Simplify right side
    23,178,878.80x = 675,235,889,441,435.62
  5. Step 5: Solve for x
    x = 675,235,889,441,435.62/23,178,878.80
  6. Step 6: Final answer
    x = 29,131,516.47

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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.