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Finding the Fourth Proportional to 17,093,978.20, 25,640,967.30 and 5,126,714.20

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Solution

The fourth proportional to 17,093,978.20, 25,640,967.30 and 5,126,714.20 is: 7,690,071.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,093,978.20 : 25,640,967.30 = 5,126,714.20 : x
  2. Step 2: Convert to fraction form
    17,093,978.20/25,640,967.30 = 5,126,714.20/x
  3. Step 3: Cross multiply
    17,093,978.20x = 25,640,967.30 × 5,126,714.20
  4. Step 4: Simplify right side
    17,093,978.20x = 131,453,911,158,645.67
  5. Step 5: Solve for x
    x = 131,453,911,158,645.67/17,093,978.20
  6. Step 6: Final answer
    x = 7,690,071.30

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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.