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Finding the Fourth Proportional to 8,040,814.90, 11,287,000.70 and 8,040,814.90

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Solution

The fourth proportional to 8,040,814.90, 11,287,000.70 and 8,040,814.90 is: 11,287,000.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,040,814.90 : 11,287,000.70 = 8,040,814.90 : x
  2. Step 2: Convert to fraction form
    8,040,814.90/11,287,000.70 = 8,040,814.90/x
  3. Step 3: Cross multiply
    8,040,814.90x = 11,287,000.70 × 8,040,814.90
  4. Step 4: Simplify right side
    8,040,814.90x = 90,756,683,404,870.42
  5. Step 5: Solve for x
    x = 90,756,683,404,870.42/8,040,814.90
  6. Step 6: Final answer
    x = 11,287,000.70

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.