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Finding the Fourth Proportional to 18,435,614.10, 27,653,421.15 and 12,696,051.30

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Solution

The fourth proportional to 18,435,614.10, 27,653,421.15 and 12,696,051.30 is: 19,044,076.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,435,614.10 : 27,653,421.15 = 12,696,051.30 : x
  2. Step 2: Convert to fraction form
    18,435,614.10/27,653,421.15 = 12,696,051.30/x
  3. Step 3: Cross multiply
    18,435,614.10x = 27,653,421.15 × 12,696,051.30
  4. Step 4: Simplify right side
    18,435,614.10x = 351,089,253,540,905
  5. Step 5: Solve for x
    x = 351,089,253,540,905/18,435,614.10
  6. Step 6: Final answer
    x = 19,044,076.95

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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.