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Finding the Fourth Proportional to 16,805,905.20, 25,208,857.80 and 16,646,472.90

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Solution

The fourth proportional to 16,805,905.20, 25,208,857.80 and 16,646,472.90 is: 24,969,709.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,805,905.20 : 25,208,857.80 = 16,646,472.90 : x
  2. Step 2: Convert to fraction form
    16,805,905.20/25,208,857.80 = 16,646,472.90/x
  3. Step 3: Cross multiply
    16,805,905.20x = 25,208,857.80 × 16,646,472.90
  4. Step 4: Simplify right side
    16,805,905.20x = 419,638,568,207,653.62
  5. Step 5: Solve for x
    x = 419,638,568,207,653.62/16,805,905.20
  6. Step 6: Final answer
    x = 24,969,709.35

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1.5x scale

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.