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Finding the Fourth Proportional to 9,078,709.15, 13,618,063.73 and 9,078,709.15

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Solution

The fourth proportional to 9,078,709.15, 13,618,063.73 and 9,078,709.15 is: 13,618,063.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,078,709.15 : 13,618,063.73 = 9,078,709.15 : x
  2. Step 2: Convert to fraction form
    9,078,709.15/13,618,063.73 = 9,078,709.15/x
  3. Step 3: Cross multiply
    9,078,709.15x = 13,618,063.73 × 9,078,709.15
  4. Step 4: Simplify right side
    9,078,709.15x = 123,634,439,790,834.14
  5. Step 5: Solve for x
    x = 123,634,439,790,834.14/9,078,709.15
  6. Step 6: Final answer
    x = 13,618,063.73

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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.