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Finding the Fourth Proportional to 19,408,068.80, 29,108,020.80 and 9,814,428.80

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Solution

The fourth proportional to 19,408,068.80, 29,108,020.80 and 9,814,428.80 is: 14,719,578.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,408,068.80 : 29,108,020.80 = 9,814,428.80 : x
  2. Step 2: Convert to fraction form
    19,408,068.80/29,108,020.80 = 9,814,428.80/x
  3. Step 3: Cross multiply
    19,408,068.80x = 29,108,020.80 × 9,814,428.80
  4. Step 4: Simplify right side
    19,408,068.80x = 285,678,597,650,519.06
  5. Step 5: Solve for x
    x = 285,678,597,650,519.06/19,408,068.80
  6. Step 6: Final answer
    x = 14,719,578.78

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.