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Finding the Fourth Proportional to 9,291,012.80, 13,936,519.20 and 9,291,012.80

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Solution

The fourth proportional to 9,291,012.80, 13,936,519.20 and 9,291,012.80 is: 13,936,519.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,291,012.80 : 13,936,519.20 = 9,291,012.80 : x
  2. Step 2: Convert to fraction form
    9,291,012.80/13,936,519.20 = 9,291,012.80/x
  3. Step 3: Cross multiply
    9,291,012.80x = 13,936,519.20 × 9,291,012.80
  4. Step 4: Simplify right side
    9,291,012.80x = 129,484,378,274,645.77
  5. Step 5: Solve for x
    x = 129,484,378,274,645.77/9,291,012.80
  6. Step 6: Final answer
    x = 13,936,519.20

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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.