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Finding the Fourth Proportional to 13,305,721.90, 19,958,582.85 and 13,305,721.90

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Solution

The fourth proportional to 13,305,721.90, 19,958,582.85 and 13,305,721.90 is: 19,958,582.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,305,721.90 : 19,958,582.85 = 13,305,721.90 : x
  2. Step 2: Convert to fraction form
    13,305,721.90/19,958,582.85 = 13,305,721.90/x
  3. Step 3: Cross multiply
    13,305,721.90x = 19,958,582.85 × 13,305,721.90
  4. Step 4: Simplify right side
    13,305,721.90x = 265,563,352,920,209.44
  5. Step 5: Solve for x
    x = 265,563,352,920,209.44/13,305,721.90
  6. Step 6: Final answer
    x = 19,958,582.85

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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.