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Finding the Fourth Proportional to 13,305,813.90, 19,958,720.85 and 13,305,813.90

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Solution

The fourth proportional to 13,305,813.90, 19,958,720.85 and 13,305,813.90 is: 19,958,720.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,305,813.90 : 19,958,720.85 = 13,305,813.90 : x
  2. Step 2: Convert to fraction form
    13,305,813.90/19,958,720.85 = 13,305,813.90/x
  3. Step 3: Cross multiply
    13,305,813.90x = 19,958,720.85 × 13,305,813.90
  4. Step 4: Simplify right side
    13,305,813.90x = 265,567,025,312,149.84
  5. Step 5: Solve for x
    x = 265,567,025,312,149.84/13,305,813.90
  6. Step 6: Final answer
    x = 19,958,720.85

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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.