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Finding the Fourth Proportional to 16,909,939.20, 25,364,908.80 and 16,630,003.20

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Solution

The fourth proportional to 16,909,939.20, 25,364,908.80 and 16,630,003.20 is: 24,945,004.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,909,939.20 : 25,364,908.80 = 16,630,003.20 : x
  2. Step 2: Convert to fraction form
    16,909,939.20/25,364,908.80 = 16,630,003.20/x
  3. Step 3: Cross multiply
    16,909,939.20x = 25,364,908.80 × 16,630,003.20
  4. Step 4: Simplify right side
    16,909,939.20x = 421,818,514,511,708.12
  5. Step 5: Solve for x
    x = 421,818,514,511,708.12/16,909,939.20
  6. Step 6: Final answer
    x = 24,945,004.80

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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.