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Finding the Fourth Proportional to 14,978,836.72, 20,670,592.33 and 8,363,527.44

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Solution

The fourth proportional to 14,978,836.72, 20,670,592.33 and 8,363,527.44 is: 11,541,554.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,978,836.72 : 20,670,592.33 = 8,363,527.44 : x
  2. Step 2: Convert to fraction form
    14,978,836.72/20,670,592.33 = 8,363,527.44/x
  3. Step 3: Cross multiply
    14,978,836.72x = 20,670,592.33 × 8,363,527.44
  4. Step 4: Simplify right side
    14,978,836.72x = 172,879,066,153,008.53
  5. Step 5: Solve for x
    x = 172,879,066,153,008.53/14,978,836.72
  6. Step 6: Final answer
    x = 11,541,554.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.