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Finding the Fourth Proportional to 17,320,961.20, 25,987,662.60 and 16,698,881.20

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Solution

The fourth proportional to 17,320,961.20, 25,987,662.60 and 16,698,881.20 is: 25,054,319.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,320,961.20 : 25,987,662.60 = 16,698,881.20 : x
  2. Step 2: Convert to fraction form
    17,320,961.20/25,987,662.60 = 16,698,881.20/x
  3. Step 3: Cross multiply
    17,320,961.20x = 25,987,662.60 × 16,698,881.20
  4. Step 4: Simplify right side
    17,320,961.20x = 433,964,890,423,083.12
  5. Step 5: Solve for x
    x = 433,964,890,423,083.12/17,320,961.20
  6. Step 6: Final answer
    x = 25,054,319.18

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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.