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Finding the Fourth Proportional to 11,775,314.80, 17,662,972.20 and 11,327,417.20

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Solution

The fourth proportional to 11,775,314.80, 17,662,972.20 and 11,327,417.20 is: 16,991,125.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,775,314.80 : 17,662,972.20 = 11,327,417.20 : x
  2. Step 2: Convert to fraction form
    11,775,314.80/17,662,972.20 = 11,327,417.20/x
  3. Step 3: Cross multiply
    11,775,314.80x = 17,662,972.20 × 11,327,417.20
  4. Step 4: Simplify right side
    11,775,314.80x = 200,075,855,101,401.81
  5. Step 5: Solve for x
    x = 200,075,855,101,401.81/11,775,314.80
  6. Step 6: Final answer
    x = 16,991,125.80

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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.