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Finding the Fourth Proportional to 7,987,114.80, 11,980,672.20 and 2,595,941.10

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Solution

The fourth proportional to 7,987,114.80, 11,980,672.20 and 2,595,941.10 is: 3,893,911.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,987,114.80 : 11,980,672.20 = 2,595,941.10 : x
  2. Step 2: Convert to fraction form
    7,987,114.80/11,980,672.20 = 2,595,941.10/x
  3. Step 3: Cross multiply
    7,987,114.80x = 11,980,672.20 × 2,595,941.10
  4. Step 4: Simplify right side
    7,987,114.80x = 31,101,119,369,607.42
  5. Step 5: Solve for x
    x = 31,101,119,369,607.42/7,987,114.80
  6. Step 6: Final answer
    x = 3,893,911.65

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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.